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  • Image classification: recognizing various features of many buildings from images

    - by el chief
    so, let's say i have the long/lat or address of many buildings can get satellite images, "street view", and perhaps 3d/perspective views of buildings. want to find: height, number of floors, floor area (max building footprint) of the building. about 200k buildings. Is there a library for recognizing buildings from satellite shots or pictures? Kind of like face detection I suppose. Any other suggestions? Thanks!

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  • Special functions in Matlab

    - by favala
    I'm trying to get a picture like the following: http://upload.wikimedia.org/wikipedia/en/e/e6/Airy-3d.svg What am I doing wrong? [x,y]=meshgrid(-1:.1:1,-1:.1:1); surf(x,y,(2*besselj(1,2*pi*sqrt(x.^2+ y.^2)/sqrt(x.^2+ y.^2)).^2) Also... kind of a side note, but if I used ndgrid instead of meshgrid here my x's and y's would switch right?

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  • Modify the windows style of another application using winAPI

    - by karthik
    My application starts up another application. whereby, i want to remove the title bar of the application which is started using c#. How can i do this, starting up with the piece of code below ? //Get current style lCurStyle = GetWindowLong(hwnd, GWL_STYLE) //remove titlebar elements lCurStyle = lCurStyle And Not WS_CAPTION lCurStyle = lCurStyle And Not WS_SYSMENU lCurStyle = lCurStyle And Not WS_THICKFRAME lCurStyle = lCurStyle And Not WS_MINIMIZE lCurStyle = lCurStyle And Not WS_MAXIMIZEBOX //apply new style SetWindowLong hwnd, GWL_STYLE, lCurStyle //reapply a 3d border lCurStyle = GetWindowLong(hwnd, GWL_EXSTYLE) SetWindowLong hwnd, GWL_EXSTYLE, lCurStyle Or WS_EX_DLGMODALFRAME //redraw SetWindowPos hwnd, 0, 0, 0, 0, 0, SWP_NOMOVE Or SWP_NOSIZE Or SWP_FRAMECHANGED

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  • How to convert a one column integer data file into a mask for image

    - by gavishna
    I have a data file which contains integers say in range 0-255 containing about 1000 integers which are random in nature.I want to use that as a mask or to multiply an image which is in RGb and another image which is in gray format. HOw do i go about this, how do i convert/represent this data file in matrix format of image dimension ?Kindly suggest. also is it possible to obtain a 3D histogram?

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  • How to increase memory allocation to program

    - by Vaibhav
    When I try to initialize a 3D array of size 300*300*4 in a C program, my program stops running and reports stack overflow error. The system I am using has 3GB RAM, which should be sufficeint. Is there any way to increase memory allocated to a program? I am using Dev C++ on Windows Vista.

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  • Localized Android app without using "res" folder. Is there a downside?

    - by user312916
    I am developing a game with Unity 3D and want to use custom code to get strings in the various languages I will be supporting. I've read articles about using the Android "res/values-xx/" directories (such as this page: http://developer.android.com/training/basics/supporting-devices/languages.html). If I do not store my translated strings in this way is there a downside? My main concern is whether the Google Play store may not know what languages my app is localized for.

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  • C++ Filling an 1D array to represent a n-dimensional object based on a straight line segment

    - by Ben
    I'm struggling to find a good way to put this question but here goes. I'm making a system that uses a 1D array implemented as double * parts_ = new double[some_variable];. I want to use this to hold co-ordinates for a particle system that can run in various dimensions. What I want to be able to do is write a generic fill algorithm for filling this in n-dimensions with a common increment in all direction to a variable size. Examples will serve best I think. Consider the case where the number of particles stored by the array is 4 In 1D this produces 4 elements in the array because each particle only has one co-ordinate. 1D: {0, 25, 50, 75}; In 2D this produces 8 elements in the array because each particle has two co-ordinates.. 2D: {0, 0, 0, 25, 25, 0, 25, 25} In 3D this produces 12 elements in the array because each particle now has three co-ordinates {0, 0, 0, 0, 0, 25, 0, 0, 50, ... } These examples are still not quite accurate, but they hopefully will suffice. The way I would do this normally for two dimensions: int i = 0; for(int x = 0; x < parts_size_ / dims_ / dims_ * 25; x += 25) { for(int y = 0; y < parts_size_ / dims_ / dims_ * 25; y += 25) { parts_[i] = x; parts_[i+1] = y; i+=2; // Indentation hates me today .< How can I implement this for n-dimensions where 25 can be any number? The straight line part is because it seems to me logical that a line is a somewhat regular shape in 1D, as is a square in 2D, and a cube in 3D. It seems to me that it would follow that there would be similar shapes in this family that could be implemented for 4D and higher dimensions via a similar fill pattern. This is the shape I wish to set my array to represent.

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  • ¿How to draw XNA window inside a panel?

    - by leviatan1001
    Hi there, Im developing a 3d Viewer in vb.net and xna. Its working very well. I have now a windows form and a xna render window, but i would like to render it inside a panel in the windows form. I have searching for info, but its so hard to addapt it into my application. How can i do it? Here is the application Thank you. Image: img299.imageshack.us/img299/384/87117064.jpg

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  • Reduce Triangle in DirectX 9

    - by Himadri
    Hello everyone, I have a 3D object with about 2000 or 3000 triangles. I want to reduce the number of triangle without affecting shape of object. for eg, I have two triangles, (1,1.5,2) (1.5,1.5,2) (1.7,2,2) (1.5,1.5,2) (1.7,2,2) (2,1.5,2) In this case these two triangle is same as a single triangle - (1,1.5,2) (2,1.5,2) (1.7,2,2) I dont want the manual method, But if there is any direct function or such thing which will reduce my triangle list. Thank You.

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  • draw a curve Sketchup using ruby

    - by David
    Below are some point 3d 15.733798,20.019757,23.006311 15.733798,19.847666,23.006311 15.723798,19.847666,23.006311 15.723798,20.019757,23.006311 15.733798,20.019757,23.006311 and this is a vector 0.0,0.0,-0.1 Is it possible to draw a curve from the information above in sketchup? Thank you

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  • g++, R_X86_64_32S : what is it ?

    - by Skypers
    Hello. I write a 3D engine in C++ with OpenGL. I usually work on this project on my archlinux 64 bits, but on theese holidays I do on a 32 bits system. I use subversion, and since the last svn up on my 64 bits system, I've got errors : http://pastebin.be/23730 core, wrapper and interface are compilet using the -fPIC option, I do not understand so ... Thanks :)

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  • Data structure in C# (3.0) that represents a CUBE

    - by Thinking
    Can you please give me some idea about how to design a data structure in C# (3.0) which will give a representation of 3D data structure. I mean to say something similar to cube. Like stock data to be viewed based on time , location . Kindly give a simple working example or even a link will do. It's urgent. Any example will be appreciated. Thanks in advance

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  • style a navigation link when a particular div is shown

    - by Matt Meadows
    I have JQuery working to show a particular div when a certain link is clicked. I have managed to apply the effect I'm after with the main navigation bar through id'ing the body tag and using css to style when the id is found. However, i'd like to apply the same effect to the sub navigation when a certain div is present. How the main navigation is styled: HTML: <nav> <ul> <li id="nav-home"><a href="index.html">Home</a></li> <li id="nav-showreel"><a href="showreel.html">Showreel</a></li> <li id="nav-portfolio"><a href="portfolio.html">Portfolio</a></li> <li>Contact</li> </ul> </nav> CSS: body#home li#nav-home, body#portfolio li#nav-portfolio { background: url("Images/Nav_Underline.png") no-repeat; background-position: center bottom; color: white; } (Other links havent been added to styling as those pages are still in development) How the sub navigation is structured: <nav id="portfolioNav"> <ul> <li id="portfolio-compositing"><a id="compositingWork" href="#">Compositing</a></li> <li id="portfolio-animation"><a id="animationWork" href="#">Animation</a></li> <li id="portfolio-motionGfx"><a id="GFXWork" href="#">Motion Graphics</a></li> <li id="portfolio-3D"><a id="3DWork" href="#">3D</a></li> </ul> </nav> As you can see, its similar format to the main navigation, however i've tried the same approach and it doesn't work :( The Javascript that switches the divs on the navigation click: <script type="text/javascript"> $(document).ready(function() { $('#3DWork').click(function(){ $('#portfolioWork').load('portfolioContent.html #Portfolio3D'); }); $('#GFXWork').click(function(){ $('#portfolioWork').load('portfolioContent.html #motionGraphics'); }); $('#compositingWork').click(function(){ $('#portfolioWork').load('portfolioContent.html #PortfolioCompositing'); }); $('#animationWork').click(function(){ $('#portfolioWork').load('portfolioContent.html #PortfolioAnimation'); }); }); </script> JSFiddle for full HTML & CSS : JSFiddle File The effect I'm After:

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  • bind9 DNS Ubuntu names pingible on server, but not on Windows Machines?

    - by leeand00
    I setup a DNS server today on Ubuntu, following this tutorial. My intent was to setup my network for dns-name resolving on the private LAN within a single zone (nothing fancy I just want name resolution). I've tested the setup on the DNS server machine itself, and I can ping all the machines listed in the configuration file. I've also configured the Windows Machines on my network, and for some reason they are incapable of pinging by names as was possible on the DNS Server itself. I've tried running nslookup on the Windows DNS clients and I receive and error mentioning the address of the DNS server. DNS forwarding works fine, I'm not having any trouble accessing the internet, the problem only lies within accessing names within the private LAN. Here are my configuration files: options { directory "/var/cache/bind"; // If there is a firewall between you and nameservers you want // to talk to, you may need to fix the firewall to allow multiple // ports to talk. See http://www.kb.cert.org/vuls/id/800113 // If your ISP provided one or more IP addresses for stable // nameservers, you probably want to use them as forwarders. // Uncomment the following block, and insert the addresses replacing // the all-0's placeholder. // forwarders { // 0.0.0.0; // }; forwarders { 8.8.8.8; 8.8.8.4; 74.242.0.12; //68.87.76.178; }; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; }; /etc/bind/named.conf.options zone "leerdomain.local" { type master; file "/etc/bind/zones/leerdomain.local.db"; notify no; }; zone "2.168.192.in-addr.arpa" { type master; file "/etc/bind/zones/rev.2.168.192.in-addr.arpa"; notify no; }; /etc/bind/named.conf.local Lookup: $TTL 3D @ IN SOA ns.leerdomain.local. admin.leerdomain.local. ( 2010011001 28800 3600 604800 38400 ); leerdomain.local. IN NS ns.leerdomain.local. ns IN A 192.168.2.9 asus IN A 192.168.2.254 www IN CNAME asus vaio IN A 192.168.2.253 iptouch IN A 192.168.2.252 toshiba IN A 192.168.2.251 gw IN A 192.168.2.1 TXT "Network Gateway" /etc/bind/zones/leerdomain.local.db (Validates fine with named-checkzone when validating zone leerdomain.local) Reverse Lookup: $TTL 3D @ IN SOA ns.leerdomain.local. admin.leerdomain.local. ( 201001101 28800 604800 604800 86400 ) IN NS ns.leerdomain.local. 1 IN PTR gw.leerdomain.local. 254 IN PTR asus.leerdomain.local. 253 IN PTR vaio.leerdomain.local. 252 IN PTR iptouch.leerdomain.local. 251 IN PTR toshiba.leerdomain.local. /etc/bind/zones/rev.2.168.192.in-addr.arpa *(Does not validate with named-checkzone when validating zone leerdomain.local gives an error of: zone leerdomain.local/IN: NS 'ns.leerdomain.local' has no address records (A or AAAA) zone leerdomain.local/IN: not loaded due to errors. * Despite not validating bind9 starts without errors in /var/log/syslog I've also configured a few of the windows machines on my network to have the static ip as specified in the lookup and reverse lookup config files. i.e. Using nslookup yields the following results: C:\Users\leeand00>nslookup ns Server: UnKnown Address: 192.168.2.9 *** UnKnown can't find ns: Non-existent domain C:\Users\leeand00>nslookup gw Server: UnKnown Address: 192.168.2.9 Name: gw. Additionally trying to ping by name also fails on machines that are not the DNS Server. Is there something wrong with my configuration of either the nameserver or the Windows Boxes that is keeping me from accessing other machines using names?

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  • Convert from apache rewrite to nginx

    - by Linux Intel
    I want to convert from apache rewrite modules to nginx RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|\%3D) [OR] RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [OR] RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR] RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR] RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2}) RewriteCond %{QUERY_STRING} SELECT(=|\[|\%[0-9A-Z]{0,2}) [OR] RewriteCond %{QUERY_STRING} UNION(=|\[|\%[0-9A-Z]{0,2}) [OR] RewriteCond %{QUERY_STRING} UPDATE(=|\[|\%[0-9A-Z]{0,2}) [OR] RewriteRule ^([^.]*)/?$ index.php [L] RewriteRule ^domain/trial/cms$ index/index.php?%{QUERY_STRING} [L] RewriteCond %{HTTP:Range} ([a-z]+) [NC] RewriteRule ([0-9_\-]+)flv$ http://www.domain.com [R,L] RewriteCond %{ENV:byte-ranges-specifier} !^$ RewriteRule ([0-9_\-]+)flv$ http://www.domain.com [R,L] RewriteCond %{HTTP_USER_AGENT} !^Mozilla/5 [NC] RewriteCond %{HTTP_USER_AGENT} !^Mozilla/4 [NC] RewriteCond %{HTTP_USER_AGENT} !^Opera [NC] RewriteRule ([0-9_\-]+)flv$ http://www.domain.com [R,L] RewriteRule ^$ index/index.php?%{QUERY_STRING} [L] RewriteCond %{SCRIPT_FILENAME} !sss.php [NC] RewriteCond %{SCRIPT_FILENAME} !m-administrator [NC] RewriteRule ^([^/^.]*)$ sss.php?encrypted=$1&%{QUERY_STRING} [L] RewriteCond %{SCRIPT_FILENAME} !sss.php [NC] RewriteCond %{SCRIPT_FILENAME} !m-administrator [NC] RewriteRule ^([^/^.]*)/([^/^.]*)$ sss.php?tab=$1&page=$2&%{QUERY_STRING} [L] RewriteCond %{SCRIPT_FILENAME} !sss.php [NC] RewriteCond %{SCRIPT_FILENAME} !m-administrator [NC] RewriteRule ^([^/^.]*)/([^/^.]*)/([^.]*)$ sss.php?tab=$1&page=$2&queryString=$3&%{QUERY_STRING} [L] RewriteCond %{SCRIPT_FILENAME} !sss.php [NC] RewriteCond %{SCRIPT_FILENAME} !security.php [NC] RewriteRule ^([^/]*)$ index/$1?%{QUERY_STRING} [L] I tried to convert it by online tools such as : http://www.anilcetin.com/convert-apache-htaccess-to-nginx/ but it didn't convert it correctly. The conversion output is : if ($args ~ "mosConfig_[a-zA-Z_]{1,21}(=|%3D)"){ set $rule_0 1; } if ($args ~ "base64_encode.*(.*)"){ set $rule_0 1; } if ($args ~* "(<|%3C).*script.*(>|%3E)"){ set $rule_0 1; } if ($args ~ "GLOBALS(=|[|%[0-9A-Z]{0,2})"){ set $rule_0 1; } if ($args ~ "_REQUEST(=|[|%[0-9A-Z]{0,2})"){ set $rule_0 1; } if ($args ~ "SELECT(=|[|%[0-9A-Z]{0,2})"){ set $rule_0 1; } if ($args ~ "UNION(=|[|%[0-9A-Z]{0,2})"){ set $rule_0 1; } if ($args ~ "UPDATE(=|[|%[0-9A-Z]{0,2})"){ set $rule_0 1; } if ($rule_0 = "1"){ rewrite ^/([^.]*)/?$ /index.php last; } if ($rule_1 = ""){ rewrite ^/domain/trial/cms$ /index/index.php?$args last; } if ($http_range ~* "([a-z]+)"){ set $rule_2 1$rule_2; } if ($rule_2 = "1"){ rewrite /([0-9_-]+)flv$ http://www.domain.com redirect; } #ignored: condition 0 if ($rule_3 = "1"){ rewrite /([0-9_-]+)flv$ http://www.domain.com redirect; } if ($http_user_agent !~* "^Mozilla/5"){ set $rule_4 1$rule_4; } if ($http_user_agent !~* "^Mozilla/4"){ set $rule_4 2$rule_4; } if ($http_user_agent !~* "^Opera"){ set $rule_4 3$rule_4; } if ($rule_4 = "321"){ rewrite /([0-9_-]+)flv$ http://www.domain.com redirect; } if ($rule_5 = ""){ rewrite ^/$ /index/index.php?$args last; } if ($uri !~* "sss.php"){ set $rule_6 1$rule_6; } if ($uri !~* "m-administrator"){ set $rule_6 2$rule_6; } if ($rule_6 = "21"){ rewrite ^/([^/^.]*)$ /sss.php?encrypted=$1&$args last; } if ($uri !~* "sss.php"){ set $rule_7 1$rule_7; } if ($uri !~* "m-administrator"){ set $rule_7 2$rule_7; } if ($rule_7 = "21"){ rewrite ^/([^/^.]*)/([^/^.]*)$ /sss.php?tab=$1&page=$2&$args last; } if ($uri !~* "sss.php"){ set $rule_8 1$rule_8; } if ($uri !~* "m-administrator"){ set $rule_8 2$rule_8; } if ($rule_8 = "21"){ rewrite ^/([^/^.]*)/([^/^.]*)/([^.]*)$ /sss.php?tab=$1&page=$2&queryString=$3&$args last; } if ($uri !~* "sss.php"){ set $rule_9 1$rule_9; } if ($uri !~* "security.php"){ set $rule_9 2$rule_9; } if ($rule_9 = "21"){ rewrite ^/([^/]*)$ /index/$1?$args last; } Please help me with the proper conversion result for nginx in order to work perfectly.

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  • Week in Geek: 4chan Falls Victim to DDoS Attack Edition

    - by Asian Angel
    This week we learned how to tweak the low battery action on a Windows 7 laptop, access an eBook collection anywhere in the world, “extend iPad battery life, batch resize photos, & sync massive music collections”, went on a reign of destruction with Snow Crusher, and had fun decorating our desktops with abstract icon collections. Photo by pasukaru76. Random Geek Links We have included extra news article goodness to help you catch up on any developments that you may have missed during the holiday break this past week. Note: The three 27C3 articles listed here represent three different presentations at the 27th Chaos Communication Congress hacker conference. 4chan victim of DDoS as FBI investigates role in PayPal attack Users of 4chan may have gotten a taste of their own medicine after the site was knocked offline by a DDoS attack from an unknown origin early Thursday morning. Report: FBI seizes server in probe of WikiLeaks attacks The FBI has seized a server in Texas as part of its hunt for the groups behind the pro-WikiLeaks denial-of-service attacks launched in December against PayPal, Visa, MasterCard, and others. Mozilla exposes older user-account database Mozilla has disabled 44,000 older user accounts for its Firefox add-ons site after a security researcher found part of a database of the account information on a publicly available server. Data breach affects 4.9 million Honda customers Japanese automaker Honda has put some 2.2 million customers in the United States on a security breach alert after a database containing information on the owners and their cars was hacked. Chinese Trojan discovered in Android games An Android-based Trojan called “Geinimi” has been discovered in the wild and the Trojan is capable of sending personal information to remote servers and exhibits botnet-like behavior. 27C3 presentation claims many mobiles vulnerable to SMS attacks According to security experts, an ‘SMS of death’ threatens to disable many current Sony Ericsson, Samsung, Motorola, Micromax and LG mobiles. 27C3: GSM cell phones even easier to tap Security researchers have demonstrated how open source software on a number of revamped, entry-level cell phones can decrypt and record mobile phone calls in the GSM network. 27C3: danger lurks in PDF documents Security researcher Julia Wolf has pointed out numerous, previously hardly known, security problems in connection with Adobe’s PDF standard. Critical update for WordPress A critical update has been made available for WordPress in the form of version 3.0.4. The update fixes a security bug in WordPress’s KSES library. McAfee Labs Predicts Geolocation, Mobile Devices and Apple Will Top the List of Targets for Emerging Threats in 2011 The list comprises 2010’s most buzzed about platforms and services, including Google’s Android, Apple’s iPhone, foursquare, Google TV and the Mac OS X platform, which are all expected to become major targets for cybercriminals. McAfee Labs also predicts that politically motivated attacks will be on the rise. Windows Phone 7 piracy materializes with FreeMarketplace A proof-of-concept application, FreeMarketplace, that allows any Windows Phone 7 application to be downloaded and installed free of charge has been developed. Empty email accounts, and some bad buzz for Hotmail In the past few days, a number of Hotmail users have been complaining about a rather disconcerting issue: their Hotmail accounts, some up to 10 years old, appear completely empty.  No emails, no folders, nothing, just what appears to be a new account. Reports: Nintendo warns of 3DS risk for kids Nintendo has reportedly issued a warning that the 3DS, its eagerly awaited glasses-free 3D portable gaming device, should not be used by children under 6 when the gadget is in 3D-viewing mode. Google eyes ‘cloaking’ as next antispam target Google plans to take a closer look at the practice of “cloaking,” or presenting one look to a Googlebot crawling one’s site while presenting another look to users. Facebook, Twitter stock trading drawing SEC eye? The high degree of investor interest in shares of hot Silicon Valley companies that aren’t yet publicly traded–like Facebook, Twitter, LinkedIn, and Zynga–may be leading to scrutiny from the U.S. Securities and Exchange Commission (SEC). Random TinyHacker Links Photo by jcraveiro. Exciting Software Set for Release in 2011 A few bloggers from great websites such as How-To Geek, Guiding Tech and 7 Tutorials took the time to sit down and talk about their software wishes for 2011. Take the time to read it and share… Wikileaks Infopr0n An infographic detailing the quest to plug WikiLeaks. The New York Times Guide to Mobile Apps A growing collection of all mobile app coverage by the New York Times as well as lists of favorite apps from Times writers. 7,000,000,000 (Video) A fascinating look at the world’s population via National Geographic Magazine. Super User Questions Check out the great answers to these hot questions from Super User. How to use a Personal computer as a Linux web server for development purposes? How to link processing power of old computers together? Free virtualization tool for testing suspicious files? Why do some actions not work with Remote Desktop? What is the simplest way to send a large batch of pictures to a distant friend or colleague? How-To Geek Weekly Article Recap Had a busy week and need to get caught up on your HTG reading? Then sit back and relax while enjoying these hot posts full of how-to roundup goodness. The 50 Best How-To Geek Windows Articles of 2010 The 20 Best How-To Geek Explainer Topics for 2010 The 20 Best How-To Geek Linux Articles of 2010 How to Search Just the Site You’re Viewing Using Google Search Ask the Readers: Backing Your Files Up – Local Storage versus the Cloud One Year Ago on How-To Geek Need more how-to geekiness for your weekend? Then look through this great batch of articles from one year ago that focus on dual-booting and O.S. installation goodness. Dual Boot Your Pre-Installed Windows 7 Computer with Vista Dual Boot Your Pre-Installed Windows 7 Computer with XP How To Setup a USB Flash Drive to Install Windows 7 Dual Boot Your Pre-Installed Windows 7 Computer with Ubuntu Easily Install Ubuntu Linux with Windows Using the Wubi Installer The Geek Note We hope that you and your families have had a terrific holiday break as everyone prepares to return to work and school this week. Remember to keep those great tips coming in to us at [email protected]! Photo by pjbeardsley. Latest Features How-To Geek ETC The 20 Best How-To Geek Linux Articles of 2010 The 50 Best How-To Geek Windows Articles of 2010 The 20 Best How-To Geek Explainer Topics for 2010 How to Disable Caps Lock Key in Windows 7 or Vista How to Use the Avira Rescue CD to Clean Your Infected PC The Complete List of iPad Tips, Tricks, and Tutorials Tune Pop Enhances Android Music Notifications Another Busy Night in Gotham City Wallpaper Classic Super Mario Brothers Theme for Chrome and Iron Experimental Firefox Builds Put Tabs on the Title Bar (Available for Download) Android Trojan Found in the Wild Chaos, Panic, and Disorder Wallpaper

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  • Ops Center Solaris 11 IPS Repository Management: Using ISO Images

    - by S Stelting
    Please join us for a live WebEx presentation of this topic on Tuesday, November 20th at 9am MDT. Details for the call are provided below: https://oracleconferencing.webex.com/oracleconferencing/j.php?ED=209834017&UID=1512096072&PW=NYTVlZTYxMzdm&RT=MiMxMQ%3D%3D Meeting password: oracle123 Call-in toll-free number: 1-866-682-4770 International numbers: http://www.intercall.com/oracle/access_numbers.htm Conference Code: 762 9343 # Security Code: 7777 # With Enterprise Manager Ops Center 12c, you can provision, patch, monitor and manage Oracle Solaris 11 instances. To do this, Ops Center creates and maintains a Solaris 11 Image Packaging System (IPS) repository on the Enterprise Controller. During the Enterprise Controller configuration, you can load repository content directly from Oracle's Support Web site and subsequently synchronize the repository as new content becomes available. Of course, you can also use Solaris 11 ISO images to create and update your Ops Center repository. There are a few excellent reasons for doing this: You're running Ops Center in disconnected mode, and don't have Internet access on your Enterprise Controller You'd rather avoid the bandwidth associated with live synchronization of a Solaris 11 package repository This demo will show you how to use Solaris 11 ISO images to set up and update your Ops Center repository. Prerequisites This tip assumes that you've already installed the Enterprise Controller on a Solaris 11 OS instance and that you're ready for post-install configuration. In addition, there are specific Ops Center and OS version requirements depending on which version of Solaris 11 you plan to install.You can get full details about the requirements in the Release Notes for Ops Center 12c update 2. Additional information is available in the Ops Center update 2 Readme document. Part 1: Using a Solaris 11 ISO Image to Create an Ops Center Repository Step 1 – Download the Solaris 11 Repository Image The Oracle Web site provides a number of download links for official Solaris 11 images. Among those links is a two-part downloadable repository image, which provides repository content for Solaris 11 SPARC and X86 architectures. In this case, I used the Solaris 11 11/11 image. First, navigate to the Oracle Web site and accept the OTN License agreement: http://www.oracle.com/technetwork/server-storage/solaris11/downloads/index.html Next, download both parts of the Solaris 11 repository image. I recommend using the Solaris 11 11/11 image, and have provided the URLs here: http://download.oracle.com/otn/solaris/11/sol-11-1111-repo-full.iso-ahttp://download.oracle.com/otn/solaris/11/sol-11-1111-repo-full.iso-b Finally, use the cat command to generate an ISO image you can use to create your repository: # cat sol-11-1111-repo-full.iso-a sol-11-1111-repo-full.iso-b > sol-11-1111-repo-full.iso The process is very similar if you plan to set up a Solaris 11.1 release in Ops Center. In that case, navigate to the Solaris 11 download page, accept the license agreement and download both parts of the Solaris 11.1 repository image. Use the cat command to create a single ISO image for Solaris 11.1 Step 2 – Mount the Solaris 11 ISO Image in your Local Filesystem Once you have created the Solaris 11 ISO file, use the mount command to attach it to your local filesystem. After the image has been mounted, you can browse the repository from the ./repo subdirectory, and use the pkgrepo command to verify that Solaris 11 recognizes the content: Step 3 – Use the Image to Create your Ops Center Repository When you have confirmed the repository is available, you can use the image to create the Enterprise Controller repository. The operation will be slightly different depending on whether you configure Ops Center for Connected or Disconnected Mode operation.For connected mode operation, specify the mounted ./repo directory in step 4.1 of the configuration wizard, replacing the default Web-based URL. Since you're synchronizing from an OS repository image, you don't need to specify a key or certificate for the operation. For disconnected mode configuration, specify the Solaris 11 directory along with the path to the disconnected mode bundle downloaded by running the Ops Center harvester script: Ops Center will run a job to import package content from the mounted ISO image. A synchronization job can take several hours to run – in my case, the job ran for 3 hours, 22 minutes on a SunFire X4200 M2 server. During the job, Ops Center performs three important tasks: Synchronizes all content from the image and refreshes the repository Updates the IPS publisher information Creates OS Provisioning profiles and policies based on the content When the job is complete, you can unmount the ISO image from your Enterprise Controller. At that time, you can view the repository contents in your Ops Center Solaris 11 library. For the Solaris 11 11/11 release, you should see 8,668 packages and patches in the contents. You should also see default deployment plans for Solaris 11 provisioning. As part of the repository import, Ops Center generates plans and profiles for desktop, small and large servers for the SPARC and X86 architecture. Part 2: Using a Solaris 11 SRU to update an Ops Center Repository It's possible to use the same approach to upgrade your Ops Center repository to a Solaris 11 Support Repository Update, or SRU. Each SRU provides packages and updates to Solaris 11 - for example, SRU 8.5 provided the packaged for Oracle VM Server for SPARC 2.2 SRUs are available for download as ISO images from My Oracle Support, under document ID 1372094.1. The document provides download links for all SRUs which have been released by Oracle for Solaris 11. SRUs are cumulative, so later versions include the packages from earlier SRUs. After downloading an ISO image for an SRU, you can mount it to your local filesystem using a mount command similar to the one shown for Solaris 11 11/11. When the ISO image is mounted to the file system, you can perform the Add Content action from the Solaris 11 Library to synchronize packages and patches from the mounted image. I used the same mount point, so the repository URL was file://mnt/repo once again: After the synchronization of an SRU is complete, you can verify its content in the Solaris 11 library using the search function. The version pattern is 0.175.0.#, where the # is the same value as the SRU. In this example, I upgraded to SRU 1. The update job ran in just under 8 minutes, and a quick search shows that 22 software components were added to the repository: It's also possible to search for "Support Repository Update" to confirm the SRU was successfully added to the repository. Details on any of the update content are available by clicking the "View Details" button under the Packages/Patches entry.

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  • CodePlex Daily Summary for Sunday, May 16, 2010

    CodePlex Daily Summary for Sunday, May 16, 2010New Projects3D Calculator: 3D Calc is a simple calculator application for Windows Phone 7, the purpose of this project is to demo the 3D animations capabilities of WP7 and sh...azaleas: AzaleasBlueset Studio Opensource Projects: Only for Opensource projects form Blueset Studio.Breck: A Phoenix and Jumper Moneky Production: Breck is a first person non-violent shooter developed in C++ and Dark GDK. After the main game is developed we are looking into making a sequel or...Discuz! Forum SDK: This project is use to login in and post or reply topic on discuz forum.Dominion.NET: Evolving Dominion source code originally written in VB6 and posted by "jatill" on Collectible Card Game Headquarters. Migration of the design and s...EkspSys2010-ITR: A mini project for the course Experimental System devolopment in spring 2010Facebook Graph Toolkit: This project is a .Net implementation of the Facebook Graph API. The aim of this project is to be a replacement to the existing Facebook Toolkit (h...iFree: This is a solution for Vietnamese network socialInfoPath Editor for Developer: InfoPath Editor for developer allows user to modify the html text directly inside InfoPath designer or filler and push the change back to InfoPath ...iZeit: Run your own online calendar, with blog integration, recurrence, todo list and categories.machgos dotNet Tests: Just some little test-projects for learningmim: TBAMinePost: MinePost is a game made for the first 48 hour Reddit Game Jam.Mockina: Mockina is a mock framework. Expression tree syntax is used to specify which members to mock, both public and non-public. The code is easy to under...MSBuild Launch Pad (mPad): This is just another shell extension for MSBuild to enable quick execution of MSBuild scripts via Windows Explorer context menu. (C) 2010 Lex LiPeacock: A browser like tabbed applicationPrimeCalculation: PrimeCalculation is a .NET app to calculate primes in a given range. Speed on Core2Duo 2,4GHZ: Found all primes from 0 to 1 billion in 35 seconds (...Slightly Silverlight: A Framework that leverages Silverlight for processing, business logic but standard HTML for the presentation layer.Stopwatch: Stopwatch is a tool for measuring the time. To start and pause stopwatch you only need to press a key on the keyboard. An additional context menu a...YAXLib: Yet Another XML Serialization Library for the .NET Framework: YAXLib is an XML Serialization library which helps you structure freely the XML result, choose among private and public fields to be serialized, an...New ReleasesActivate Your Glutes: v1.0.3.0: This release is a migration to VS2010, .Net 4, MVC2 and Entity Framework 4. The code has also been considerably cleaned up - taking advantage of E...AnyCAD: AnyCAD.Free.ENU.v1.1: http://www.anycad.net Modeling •2D: Line, Rectangle, Arc, Arch, Circle, Spline, Polygon •Feature: Extrude, Loft, Chamfer, Sweep, Revol •Boolean: ...Blueset Studio Opensource Projects: 多功能计算器 3.5: 稳定版本。Code for Rapid C# Windows Development eBook: LLBLGen LINQPad Data Context Driver Ver 1.0.0.0: First release of a Static LLBLGen Pro Data Context Driver for LINQPad I recommend LINQPad 4 as it seems more stable with this driver than LINQPad 2.DSQLT - Dynamic SQL Templates: Release 1.2. Some behaviour has changed!!: Attention. Some behaviour has changed! Now its necessary to use WildCards in the pattern-parameter for DSQLT.AllSourceContains DSQLT.Databases DSQ...FDS AutoCAD plug-in: FDS to AutoCAD plug-in: Basic functionality was implemented. Some routines like setting fds executable location are still not automated.Feature Builder Guidance Extensions: FBGX 2 - Standalone FX: Background: The Feature Builder Guidance is extensible and displays guidance content supplied by all the Feature Builder Guidance Extensions (FBGX...Floe IRC Client: Floe IRC Client 2010-05 R3: - You can now right click on the input box to get options for toggling bold, underline, colors, etc. - The size of the nickname column is now saved...Floe IRC Client: Floe IRC Client 2010-05 R4: - A user's channel status now appears next to their nick when they talk (e.g. @Nick or +Nick) - Fixed an error where certain kinds of network probl...HD-Trailers.NET Downloader: HD-Trailers.NET Downloader v1.0: Version 1.0 Thanks to Wolfgang for all his help. I let this project languish for too long while focusing on other things, but his involvement has ...InfoPath Editor for Developer: InfoPath Editor Beta 1: Intial Release: Can load InfoPath inner html. Can edit InfoPath inner html. InfoPath 2007 only.LinkSharp: LinkSharp 0.1.0: First release of LinkSharp. Set up iis, and use the sql script to create a new database.PowerAuras: PowerAuras V3.0.0F: This version adds better integration with GTFO New Flags Added PvP flag In 5-Man Instance In Raid Instance In Battleground In ArenaRx Contrib: V1.4: Add the ability to catch internal exception and the ability to publish error by queue adaptersSEO SiteMap: SEO SiteMap RC1: -SevenZipLib Library: v9.13.2: Stable release associated with 7z.dll 9.13 beta. Ability to create and update archives not implemente yet.Silverlight / WPF Controls: Upload, FlipPanel, DeepZoom, Animation, Encryption: Code Camp Demonstration: This code example demonstrates MVVM/MEF with WPF with attached properties,security and custom ICommand class.SQL Data Capture - Black Box Application Testing: SQLDataCapture V1.2: Added Entity Framework Support to CRUD generator (Insert Stored Procedure) and switched to VS 2010 for development.Stopwatch: Stopwatch 0.1: Stopwatch Release 0.1VCC: Latest build, v2.1.30515.0: Automatic drop of latest buildYet another developer blog - Examples: Asynchronous TreeView in ASP.NET MVC: This sample application shows how to use jQuery TreeView plugin for creating an asynchronous TreeView in ASP.NET MVC. This application is accompani...Most Popular ProjectsRawrWBFS ManagerAJAX Control ToolkitMicrosoft SQL Server Product Samples: DatabaseSilverlight ToolkitWindows Presentation Foundation (WPF)patterns & practices – Enterprise LibraryMicrosoft SQL Server Community & SamplesPHPExcelASP.NETMost Active Projectspatterns & practices – Enterprise LibraryRawrPHPExcelBlogEngine.NETMicrosoft Biology FoundationCustomer Portal Accelerator for Microsoft Dynamics CRMWindows Azure Command-line Tools for PHP DevelopersMirror Testing SystemN2 CMSStyleCop

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  • No root file system is defined error after installation

    - by LearnCode
    I installed ubuntu through Wubi and once i rebooted I get no root file system defined error. here's the output of the boot_info_script.Could anyone point me out where the error is. Boot Info Script 0.60 from 17 May 2011 ============================= Boot Info Summary: =============================== => Windows is installed in the MBR of /dev/sda. => Windows is installed in the MBR of /dev/sdb. sda1: __________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Operating System: Windows 7 Boot files: /bootmgr /Boot/BCD /Windows/System32/winload.exe /ntldr /ntdetect.com /wubildr /ubuntu/winboot/wubildr /wubildr.mbr /ubuntu/winboot/wubildr.mbr /ubuntu/disks/root.disk /ubuntu/disks/swap.disk sda1/Wubi: _____________________________________________________________________ File system: Boot sector type: Unknown Boot sector info: Mounting failed: mount: unknown filesystem type '' sda2: __________________________________________________________________________ File system: vfat Boot sector type: Unknown Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files: /boot.ini /ntldr /NTDETECT.COM sdb1: __________________________________________________________________________ File system: ntfs Boot sector type: Windows Vista/7 Boot sector info: No errors found in the Boot Parameter Block. Operating System: Boot files: ============================ Drive/Partition Info: ============================= Drive: sda _____________________________________________________________________ Disk /dev/sda: 160.0 GB, 160041885696 bytes 240 heads, 63 sectors/track, 20673 cylinders, total 312581808 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start Sector End Sector # of Sectors Id System /dev/sda1 * 63 301,250,879 301,250,817 7 NTFS / exFAT / HPFS /dev/sda2 301,250,943 312,575,759 11,324,817 c W95 FAT32 (LBA) GUID Partition Table detected, but does not seem to be used. Partition Start Sector End Sector # of Sectors System /dev/sda1 323,465,741,313,502,988275,962,973,585-323,465,465,350,529,402 - /dev/sda2 242,728,591,638,290,720578,721,383,108,845,578335,992,791,470,554,859 - /dev/sda3 1,827,498,311,425,204,2562,091,935,274,843,009,907264,436,963,417,805,652 - /dev/sda4 579,711,218,081,401,3572,006,665,459,744,645,1521,426,954,241,663,243,796 - /dev/sda11 270,286,346,402,038,1183,786,543,326,404,525,9543,516,256,980,002,487,837 - /dev/sda12 4,179,681,002,230,769,6684,179,389,374,010,033,387-291,628,220,736,280 - /dev/sda13 232,556,480,979,456,1311,160,152,593,793,119,235927,596,112,813,663,105 - /dev/sda14 98,342,784,050,266,9183,691,264,578,843,725,1953,592,921,794,793,458,278 - /dev/sda15 2,307,845,219,957,882,4961,850,841,032,955,276,350-457,004,187,002,606,145 - /dev/sda16 512,592,046,878,946,497368,458,231,024,779,444-144,133,815,854,167,052 - /dev/sda17 2,504,135,232,870,384,3923,665,087,872,719,320,8291,160,952,639,848,936,438 - /dev/sda18 3,783,181,605,270,691,304122,034,509,624,708,942-3,661,147,095,645,982,361 - /dev/sda19 3,519,661,520,275,829,5122,376,243,094,723,723,587-1,143,418,425,552,105,924 - /dev/sda20 3,867,920,076,859,0744,494,691,111,933,625,1044,490,823,191,856,766,031 - /dev/sda21 1,500,144,061,909,253,7612,511,182,033,846,676,3401,011,037,971,937,422,580 - /dev/sda22 13,035,625,499,900,0062,360,168,613,941,394,9472,347,132,988,441,494,942 - /dev/sda23 4,228,978,682,068,599,48813,159,423,631,648,263-4,215,819,258,436,951,224 - /dev/sda24 3,695,955,742,872,046,9084,561,928,726,501,845,776865,972,983,629,798,869 - /dev/sda25 1,297,460,286,683,948,0461,444,350,486,339,417,957146,890,199,655,469,912 - /dev/sda26 1,228,858,248,533,131,831 0-1,228,858,248,533,131,830 - /dev/sda121 3,189,184,846,146,487,1461,849,820,258,006,914,852-1,339,364,588,139,572,293 - /dev/sda122 1,226,215,547,991,800,578389,781,518,734,546,300-836,434,029,257,254,277 - /dev/sda123 3,851,660,168,574,583,4654,046,215,657,583,031,556194,555,489,008,448,092 - /dev/sda124 1,197,460,980,174,153,341699,103,965,005,093,246-498,357,015,169,060,094 - Drive: sdb _____________________________________________________________________ Disk /dev/sdb: 750.2 GB, 750153367552 bytes 255 heads, 63 sectors/track, 91200 cylinders, total 1465143296 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes Partition Boot Start Sector End Sector # of Sectors Id System /dev/sdb1 2,048 1,465,143,295 1,465,141,248 7 NTFS / exFAT / HPFS "blkid" output: ________________________________________________________________ Device UUID TYPE LABEL /dev/loop0 iso9660 Ubuntu 11.04 amd64 /dev/loop1 squashfs /dev/sda1 E814B55B14B52E06 ntfs /dev/sda2 01CD-023B vfat HP_RECOVERY /dev/sdb1 7836F22A36F1E8D0 ntfs Elements ================================ Mount points: ================================= Device Mount_Point Type Options /dev/loop0 /cdrom iso9660 (ro,noatime) /dev/loop1 /rofs squashfs (ro,noatime) /dev/sdb1 /mnt fuseblk (rw,nosuid,nodev,allow_other,blksize=4096) ================================ sda2/boot.ini: ================================ -------------------------------------------------------------------------------- [boot loader] timeout=0 default=C:\CMDCONS\BOOTSECT.DAT [operating systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect C:\CMDCONS\BOOTSECT.DAT="Microsoft Windows Recovery Console" /cmdcons -------------------------------------------------------------------------------- ======================== Unknown MBRs/Boot Sectors/etc: ======================== Unknown GPT Partiton Type c104043000e9b9040dff24b580010100 Unknown GPT Partiton Type 46313020746f20737461727420746865 Unknown GPT Partiton Type 65727920706172746974696f6e207761 Unknown GPT Partiton Type 727920706172746974696f6e0d0a0000 Unknown GPT Partiton Type 000f84e5f7668b162404e82804744066 Unknown GPT Partiton Type ce01e8dc038bfe66391624047505e8d9 Unknown GPT Partiton Type 0345086603f0e881030bd2740333d240 Unknown GPT Partiton Type bece01e8db0287fec645041266895508 Unknown GPT Partiton Type 01f60634010175078b363b01e854f5e8 Unknown GPT Partiton Type 313825740ffec03865107408fec03824 Unknown GPT Partiton Type 02f60634014074088bfdbece01e85101 Unknown GPT Partiton Type 263401f9e894f30f858ef4e8e201e8ec Unknown GPT Partiton Type f7e960f35245434f5645525966606633 Unknown GPT Partiton Type 660faf1e00106603dac3668b0e001066 Unknown GPT Partiton Type 8bfd386d04740583c710e2f6c36660c6 Unknown GPT Partiton Type 04ebf132c0b91000f3aac3bf0c04ebf3 Unknown GPT Partiton Type 02662bc1660fb71e0e02662bc366031e Unknown GPT Partiton Type f4b40ebb0700b901003c08751381ff25 Unknown GPT Partiton Type 534f465448494e4b90653f62011b0100 Unknown GPT Partiton Type 0b050900027777772e68702e636f6d00 Unknown GPT Partiton Type d441a0f5030003000ecb744a08bb3746 Unknown GPT Partiton Type f8579a116b4a7aa931cde97a4b9b5c09 Unknown GPT Partiton Type 7229990415b77c0a1970e7e824237a3a Unknown GPT Partiton Type afb6e34d6b4bd8c7c0eada19a9786cc3 Unknown BootLoader on sda1/Wubi 00000000 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 |0000000000000000| * 00000200 Unknown BootLoader on sda2 00000000 e9 a7 00 52 45 43 4f 56 45 52 59 00 02 08 20 00 |...RECOVERY... .| 00000010 02 00 00 00 00 f8 00 00 3f 00 f0 00 7f b9 f4 11 |........?.......| 00000020 8c cd ac 00 1e 2b 00 00 00 00 00 00 02 00 00 00 |.....+..........| 00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000040 80 00 29 3b 02 cd 01 20 20 20 20 20 20 20 20 20 |..);... | 00000050 20 20 46 41 54 33 32 20 20 20 8b d0 c1 e2 02 80 | FAT32 ......| 00000060 e6 01 66 c1 e8 07 66 3b 46 f8 74 2a 66 89 46 f8 |..f...f;F.t*f.F.| 00000070 66 03 46 f4 66 0f b6 5e 28 80 e3 0f 74 0f 3a 5e |f.F.f..^(...t.:^| 00000080 10 0f 83 90 00 66 0f af 5e 24 66 03 c3 bb e0 07 |.....f..^$f.....| 00000090 b9 01 00 e8 cf 00 8b da 66 8b 87 00 7e 66 25 ff |........f...~f%.| 000000a0 ff ff 0f 66 3d f8 ff ff 0f c3 33 c9 8e d9 8e c1 |...f=.....3.....| 000000b0 8e d1 66 bc f4 7b 00 00 bd 00 7c 66 0f b6 46 10 |..f..{....|f..F.| 000000c0 66 f7 66 24 66 0f b7 56 0e 66 03 56 1c 66 89 56 |f.f$f..V.f.V.f.V| 000000d0 f4 66 03 c2 66 89 46 fc 66 c7 46 f8 ff ff ff ff |.f..f.F.f.F.....| 000000e0 66 8b 46 2c 66 50 e8 af 00 bb 70 00 b9 01 00 e8 |f.F,fP....p.....| 000000f0 73 00 bf 00 07 b1 0b be a9 7d f3 a6 74 2a 03 f9 |s........}..t*..| 00000100 83 c7 15 81 ff 00 09 72 ec 66 40 4a 75 db 66 58 |[email protected]| 00000110 e8 47 ff 72 cf be b4 7d ac 84 c0 74 09 b4 0e bb |.G.r...}...t....| 00000120 07 00 cd 10 eb f2 cd 19 66 58 ff 75 09 ff 75 0f |........fX.u..u.| 00000130 66 58 bb 00 20 66 83 f8 02 72 da 66 3d f8 ff ff |fX.. f...r.f=...| 00000140 0f 73 d2 66 50 e8 50 00 0f b6 4e 0d e8 16 00 c1 |.s.fP.P...N.....| 00000150 e1 05 03 d9 66 58 53 e8 00 ff 5b 72 d8 8a 56 40 |....fXS...[r..V@| 00000160 ea 00 00 00 20 66 60 66 6a 00 66 50 53 6a 00 66 |.... f`fj.fPSj.f| 00000170 68 10 00 01 00 8b f4 b8 00 42 8a 56 40 cd 13 be |h........B.V@...| 00000180 c7 7d 72 94 67 83 44 24 06 20 66 67 ff 44 24 08 |.}r.g.D$. fg.D$.| 00000190 e2 e3 83 c4 10 66 61 c3 66 48 66 48 66 0f b6 56 |.....fa.fHfHf..V| 000001a0 0d 66 f7 e2 66 03 46 fc c3 4e 54 4c 44 52 20 20 |.f..f.F..NTLDR | 000001b0 20 20 20 20 0d 0a 4e 6f 20 53 79 73 74 65 6d 20 | ..No System | 000001c0 44 69 73 6b 20 6f 72 0d 0a 44 69 73 6b 20 49 2f |Disk or..Disk I/| 000001d0 4f 20 65 72 72 6f 72 0d 0a 50 72 65 73 73 20 61 |O error..Press a| 000001e0 20 6b 65 79 20 74 6f 20 72 65 73 74 61 72 74 0d | key to restart.| 000001f0 0a 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.| 00000200 =============================== StdErr Messages: =============================== umount: /isodevice: device is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1))

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  • How to Tell a Hardware Problem From a Software Problem

    - by Chris Hoffman
    Your computer seems to be malfunctioning — it’s slow, programs are crashing or Windows may be blue-screening. Is your computer’s hardware failing, or does it have a software problem that you can fix on your own? This can actually be a bit tricky to figure out. Hardware problems and software problems can lead to the same symptoms — for example, frequent blue screens of death may be caused by either software or hardware problems. Computer is Slow We’ve all heard the stories — someone’s computer slows down over time because they install too much software that runs at startup or it becomes infected with malware. The person concludes that their computer is slowing down because it’s old, so they replace it. But they’re wrong. If a computer is slowing down, it has a software problem that can be fixed. Hardware problems shouldn’t cause your computer to slow down. There are some rare exceptions to this — perhaps your CPU is overheating and it’s downclocking itself, running slower to stay cooler — but most slowness is caused by software issues. Blue Screens Modern versions of Windows are much more stable than older versions of Windows. When used with reliable hardware with well-programmed drivers, a typical Windows computer shouldn’t blue-screen at all. If you are encountering frequent blue screens of death, there’s a good chance your computer’s hardware is failing. Blue screens could also be caused by badly programmed hardware drivers, however. If you just installed or upgraded hardware drivers and blue screens start, try uninstalling the drivers or using system restore — there may be something wrong with the drivers. If you haven’t done anything with your drivers recently and blue screens start, there’s a very good chance you have a hardware problem. Computer Won’t Boot If your computer won’t boot, you could have either a software problem or a hardware problem. Is Windows attempting to boot and failing part-way through the boot process, or does the computer no longer recognize its hard drive or not power on at all? Consult our guide to troubleshooting boot problems for more information. When Hardware Starts to Fail… Here are some common components that can fail and the problems their failures may cause: Hard Drive: If your hard drive starts failing, files on your hard drive may become corrupted. You may see long delays when you attempt to access files or save to the hard drive. Windows may stop booting entirely. CPU: A failing CPU may result in your computer not booting at all. If the CPU is overheating, your computer may blue-screen when it’s under load — for example, when you’re playing a demanding game or encoding video. RAM: Applications write data to your RAM and use it for short-term storage. If your RAM starts failing, an application may write data to part of the RAM, then later read it back and get an incorrect value. This can result in application crashes, blue screens, and file corruption. Graphics Card: Graphics card problems may result in graphical errors while rendering 3D content or even just while displaying your desktop. If the graphics card is overheating, it may crash your graphics driver or cause your computer to freeze while under load — for example, when playing demanding 3D games. Fans: If any of the fans fail in your computer, components may overheat and you may see the above CPU or graphics card problems. Your computer may also shut itself down abruptly so it doesn’t overheat any further and damage itself. Motherboard: Motherboard problems can be extremely tough to diagnose. You may see occasional blue screens or similar problems. Power Supply: A malfunctioning power supply is also tough to diagnose — it may deliver too much power to a component, damaging it and causing it to malfunction. If the power supply dies completely, your computer won’t power on and nothing will happen when you press the power button. Other common problems — for example, a computer slowing down — are likely to be software problems. It’s also possible that software problems can cause many of the above symptoms — malware that hooks deep into the Windows kernel can cause your computer to blue-screen, for example. The Only Way to Know For Sure We’ve tried to give you some idea of the difference between common software problems and hardware problems with the above examples. But it’s often tough to know for sure, and troubleshooting is usually a trial-and-error process. This is especially true if you have an intermittent problem, such as your computer blue-screening a few times a week. You can try scanning your computer for malware and running System Restore to restore your computer’s system software back to its previous working state, but these aren’t  guaranteed ways to fix software problems. The best way to determine whether the problem you have is a software or hardware one is to bite the bullet and restore your computer’s software back to its default state. That means reinstalling Windows or using the Refresh or reset feature on Windows 8. See whether the problem still persists after you restore its operating system to its default state. If you still see the same problem – for example, if your computer is blue-screening and continues to blue-screen after reinstalling Windows — you know you have a hardware problem and need to have your computer fixed or replaced. If the computer crashes or freezes while reinstalling Windows, you definitely have a hardware problem. Even this isn’t a completely perfect method — for example, you may reinstall Windows and install the same hardware drivers afterwards. If the hardware drivers are badly programmed, the blue-screens may continue. Blue screens of death aren’t as common on Windows these days — if you’re encountering them frequently, you likely have a hardware problem. Most blue screens you encounter will likely be caused by hardware issues. On the other hand, other common complaints like “my computer has slowed down” are easily fixable software problems. When in doubt, back up your files and reinstall Windows. Image Credit: Anders Sandberg on Flickr, comedy_nose on Flickr     

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