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• How can I change the file name of the Program Files (x86) folder?

  - by Madrauk

  Let me stop you before the "you shouldn't do that" and "you will corrupt your file paths". I know what I'm doing, but I'll give you the story to convince you. Basically, my hard drive is failing to the point where programs installed on it are not responding consistently. So, in preparation for my replacement, I'm moving as many files as possible to my secondary because the new drive will be smaller (it's an emergency I can't buy a fancy expensive new drive) and so I can actually use my computer until the new drive comes in. The basic idea behind what I'm doing is I've copied the contents of the Program Files x86 folder to another spot on my other drive, and I want to replace the original folder in the C drive with a symbolic link that points to the other drive, so the programs can run from that drive and be fine but it will save space on my C drive and simplify the moving process when the new one comes in. To do that, I need to rename the program files folder, make the symbolic link, hopefully delete the program files folder, then restart my computer so all the programs are running properly and I can confirm it works. Now that I've told you why, can anyone help me out?

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• First Letter Section Headers with Core Data

  - by Cory Imdieke

  I'm trying to create a list of people sorted in a tableView of sections with the first letter as the title for each section - a la Address Book. I've got it all working, though there is a bit of an issue with the sort order. Here is the way I'm doing it now: NSFetchRequest *request = [[NSFetchRequest alloc] init]; [request setEntity:[NSEntityDescription entityForName:@"Contact" inManagedObjectContext:context]]; NSSortDescriptor *fullName = [[NSSortDescriptor alloc] initWithKey:@"fullName" ascending:YES]; NSArray *sortDescriptors = [[NSArray alloc] initWithObjects:fullName, nil]; [request setSortDescriptors:sortDescriptors]; [fullName release]; [sortDescriptors release]; NSError *error = nil; [resultController release]; resultController = [[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:@"firstLetter" cacheName:nil]; [resultController performFetch:&error]; [request release]; fullName is a standard property, and firstLetter is a transient property which returns - as you'd expect - the first letter of the fullName. 95% of the time, this works perfectly. The problem is the result controller expects these two "lists" (the sorted fullName list and the sorted firstLetter list) to match exactly. If I have 2 contacts like John and Jack, my fullName list would sort these as Jack, John every time but my firstLetter list might sort them as John, Jack sometimes as it's only sorting by the first letter and leaving the rest to chance. When these lists don't match up, I get a blank tableView with 0 items in it. I'm not really sure how I should go about fixing this issue, but it's very frustrating. Has anyone else run into this? What did you guys find out?

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• How to read a string one letter at a time in python

  - by dan

  I need to convert a string inputed by a user into morse code. The way our professor wants us to do this is to read from a morseCode.txt file, seperate the letters from the morseCode into two lists, then convert each letter to morse code (inserting a new line when there is a space). I have the beginning. What it does is reads the morseCode.txt file and seperates the letters into a list [A, B, ... Z] and the codes into a list ['– – . . – –\n', '. – . – . –\n'...]. We haven't learned "sets" yet, so I can't use that. How would I then take the string that they inputed, go through letter by letter, and convert it to morse code? I'm a bit caught up. Here's what I have right now (not much at all...) morseCodeFile = open('morseCode.txt', 'r') letterList = [] codeList = [] line = morseCodeFile.readline() while line != '': letterList.append(line[0]) codeList.append(line[2:]) line = morseCodeFile.readline() morseCodeFile.close() userInput = input("Enter a string to be converted to morse code or press <enter> to quit ")

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• On counting pairs of words that differ by one letter

  - by Quintofron

  Let us consider n words, each of length k. Those words consist of letters over an alphabet (whose cardinality is n) with defined order. The task is to derive an O(nk) algorithm to count the number of pairs of words that differ by one position (no matter which one exactly, as long as it's only a single position). For instance, in the following set of words (n = 5, k = 4): abcd, abdd, adcb, adcd, aecd there are 5 such pairs: (abcd, abdd), (abcd, adcd), (abcd, aecd), (adcb, adcd), (adcd, aecd). So far I've managed to find an algorithm that solves a slightly easier problem: counting the number of pairs of words that differ by one GIVEN position (i-th). In order to do this I swap the letter at the ith position with the last letter within each word, perform a Radix sort (ignoring the last position in each word - formerly the ith position), linearly detect words whose letters at the first 1 to k-1 positions are the same, eventually count the number of occurrences of each letter at the last (originally ith) position within each set of duplicates and calculate the desired pairs (the last part is simple). However, the algorithm above doesn't seem to be applicable to the main problem (under the O(nk) constraint) - at least not without some modifications. Any idea how to solve this?

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• Secure wipe of a hard drive using WinPE.

  - by Derek Meier

  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} The wiping of a hard drive is typically seen as fairly trivial.  There are tons of applications out there that will do it for you.  Point àClickàGlobal-Thermo Nuclear War. However, these applications are typically expensive or unreliable.  Plus, if you have a laptop or lack a secondary computer to put the hard drive into – how on earth do you wipe it quickly and easily while still conforming to a 7 pass rule (this means that every possible bit on the hard drive is set to 0 and then to 1 seven times in a row)?  Yes, one pass should be enough – as turning every bit from a 1 to a zero will wipe the data from existence.  But, we’re dealing with tinfoil hat wearing types here people.  DOD standards dictate at least 3 passes, and typically 7 is the preferred amount.  I’m not going to argue about data recovery.  I have been told to use 7 passes, and so I will.  So say we all! Quite some time ago I used to make a BartPE XP-based boot cd for the original purpose of securely wiping data.  I loved BartPE and integrated so many plugins into my builds that I could do pretty much anything directly from CD.  Reset passwords, uninstall security updates, wipe drives, chkdsk, remove spyware, install Windows, etc.  However, with the newer multi-core systems and new chipsets coming out from vendors, I found that BartPE was rather difficult to keep up to date.  I have since switched to WinPE 3.0 (Windows Preinstallation Environment). http://technet.microsoft.com/en-us/library/cc748933(WS.10).aspx  It is fairly simple to create your own CD, and I have made a few helpful scripts to easily integrate drivers and rebuild the ISO file for you.  I’ll cover making your own boot CD utilizing WinPE 3.0 in a later post – I can talk about WinPE forever and need to collect my thoughts!!  My wife loves talking about WinPE almost as much as talking about Doctor Who.  Wait, did I say loves?  Hmmmm, I may have meant loathes. The topic at hand?  Right. Wiping a drive! I must have drunk too much coffee this morning.  I like to use a simple batch script that calls a combination of diskpart.exe from Microsoft® and Sdelete.exe created by our friend Mark Russinovich. http://technet.microsoft.com/en-us/sysinternals/bb897443.aspx All of the following files are located within the same directory on my WinPE boot CD. Here are the contents of wipe_me.bat, script.txt and sdelete.reg. Wipe_me.bat:   @echo off echo. echo     I will completely wipe the local hard drives using echo     7 individual wipes. The data will NOT echo     be recoverable.  I will begin after you pause echo. echo Preparing to partition and format disk. Diskpart.exe /s "script.txt" REM I was annoyed by not having a completely automated script – and Sdelete wants you to accept the license agreement. So, I added a registry file to skip doing that. regedit /S sdelete.reg rem sdelete options selected are: -p (passes) -c (zero free space) -s (recurse through subdirectories, if any) -z (clean free space) [drive letter] sdelete.exe -p 7 -c -s -z c: echo. echo Pass seven complete. echo. echo Wiping complete. Pause exit script.txt: list disk select disk 0 clean create partition primary select partition 1 active format FS=NTFS LABEL="New Volume" QUICK assign letter=c exit *Notes: This script assumes one local hard drive – change the script as you see fit for your environment.  The clean command will overwrite the master boot record and any hidden sector information – so be careful!   sdelete.reg: Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Software\Sysinternals\SDelete] "EulaAccepted"=dword:00000001   With a combination of WinPE, sdelete.exe and your friendly neighborhood text editor you can begin wiping drives as quickly and easily as possible!  I hope this helps, I get asked this a lot in my line of work. Best of luck, Derek

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• HFS+ hard drive being mounted as read only

  - by DNA

  This is a recurring problem and occurs a few times a week. I have an external hard drive which is hfs+. Every couple of weeks, for no obviuous reason, when I mount it by pluggin it in to my Ubuntu 11.10, it is read only and I can't copy any files into it. I gksudo nautlius and change the ownership and it magically works in some time. But returns to the read only state soon in a few hours-days without any rhyme or reason. Right now my fstab doesn't have any entry for my hard drive. What gives? What in the world is going on with Linux/HFS+? This is frustrating. I can't reformat my hard drive because I have almost a terrabyte of data in it and no receptacle to hold it while I reformat it.

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• Cannot boot from SD card/flash drive on Macbook Pro 13" - boot fails after purple screen

  - by user3512567

  It's my first time using Ubuntu and I have run into some problems. I have a 16GB USB Flash drive and 16GB SDHC Card. I would prefer to use the SD card but either will do just fine if it helps with the solution. I Have a 13" Macbook Pro with no hard drive deeming the machine useless without an OS. I thought I could substitute the hard drive for a 16GB SD card with an Ubuntu ISO on it. I would like to plug in my SD card into my Macbook Pro, boot the Ubuntu ISO and do simple things such as use the browser for internet. The Problem: Whenever I boot my Macbook pro with the SD card that has the Ubuntu ISO, it loads at the purple logo screen and does not function. How can I resolve this issue?

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• Uninstall ubuntu from external hard drive + remove bootloader from internal hd

  - by Bart Sleeuwen van

  I have created a bootable usb stick with linuxlive and Ubuntu.I then tried to install ubuntu on my external harddrive. However I guess I wrongly picked the drive where the boot section is installed, it now is installed on my internal (C:) drive. When I open the bios bootsequence it says Ubuntu 2 times? As if the boot is installed twice? I'd like to uninstall Ubuntu from my external drive but most important: I don't want Grub to be start up on my PC. I tried booting in Windows 8 recovery mode and used the following commands: bootrec /fixmbr bootrec /fixboot However the ubuntu choices wont disappear? I then tried to add bootrec /scanos and bootrec /rebuildbcd to the commands but somehow this wont work either. Anyone got some ideas? Thank you in advance! Best regards, Bart

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• Bootable USB drive won't run installation

  - by Edgar

  I am having issues installing 12.10 on a laptop from bootable USB Drive 4GB FAT32. Also I changed order on BIOS to boot from USB. But only I see is the black screen with SYSLINUX 4.06 EDD 4.06-pre7 Copyright (C) 1994-2012 H. Peter Anvin et al _ I tried to install 12.10 into my older laptop using the same bootable USB drive just to be sure, and it's all works fine! I have also trying different USB drives, but results were the same. So it looks like there is nothing wrong with my bootable USB drives. Something is wrong with my laptop, but I can't figure out what exactly, because it's very new and Windows7 boots and runs just great. I Googled but found nothing useful. My laptop is really a small one: Acer AOD270 Protcessor: Intel(R) Atom(TM) CPU N26OO 1.60 GHz RAM: 1 GB Windows 7 Starter 32 bit It has no CD drive Any help would be really appreciated please.

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• Using GParted to rescue data and format hard drive to NTFS

  - by Ishan

  I'm having problems booting to Windows XP due to bad sectors on the hard drive. I've tried fixboot and fixmbr from the recovery console. That only made matters worse. Now I want to use GParted to attempt data rescue and format the hard drive to NTFS. Unfortunately, I get an error (Picture 2) when trying to recover my files, and the option to format the hard drive is grayed out. The only thing I can do is create a new partition. When I click "view" I get the "Unable to open the default file manager" error

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• Google I/O 2012 - What's New in the Google Drive SDK

  Google I/O 2012 - What's New in the Google Drive SDK Josh Hudgins, John Day-Richter In this talk, we will introduce a number of major new features and platforms to the Google Drive SDK. We will discuss what we feel is a revolution in the way developers write collaborative applications. We will also announce a new API to make managing files in Google Drive even easier for developers, replacing some legacy APIs in the process. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 556 6 ratings Time: 55:14 More in Science & Technology

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• Recover files from a SATA drive from USB

  - by Shane

  I've damaged the drive I had in my windows laptop and now I want to try to recover as many files as possible. I know very little about linux though. I have Ubuntu 10.04. I have a docking station for the drive and it is connected to my linux machine. The drive appears in disk utility. Unfortunately, this is where I have no idea where to proceed. Any help is appreciated and I can provide more info if needed.

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• Not mounting/finding 1TB NTFS drive

  - by Dave

  I am having trouble with Ubuntu recognizing/finding/mounting one of my hard drives. I dual boot Ubuntu and Windows 7. I had Ubuntu 10.04 and all drives showed up under "Places" I could click on any of my Windows/NTFS drives and they would mount as they should. I have since updated to Ubuntu 10.10. One of my drives no longer shows up in "Places" or in Nautilus. I can open gparted and it is listed there, but if I try to click the mount button, I get an error. I am currently at work and can not post any screenshots or errors, but will happily do so later. I was just hoping that someone might be able to give me something to try when I get home. 250gig SATA hard drive (Windows7/NTFS) - recognized/mountable 200gig PATA hard drive (Ubuntu 10.10) - recognized (obviously) 1TB SATA hard drive (NTFS) - not recognized/won't mount Thanks!

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• Can I make a bootable USB flash drive for Mac from Windows

  - by Patrick

  Problem: MacBook hard drive crashed and is ruined. I need to work on a music assignment on a program only available for Mac OS X and Ubuntu, and will not be able to get a new hard drive for the Mac before the assignment is due. I only have non-administrator access to Windows XP and 7 computers. Can I make a USB drive with Ubuntu on it so I can use my MacBook with this? Can I create this from a Windows computer? Please give detailed steps, if possible, for I am a noob when it comes to computers, and especially Linux.

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• How To Run Chrome OS From a USB Drive and Use It On Any Computer

  - by Chris Hoffman

  Google only supports running Chrome OS on Chromebooks, but don’t let that stop you. You can put Chrome OS on a USB drive and boot it on any computer, just as you’d run a Linux distribution from a USB drive. If you just want to test Chrome OS, your best bet is running it in a virtual machine. This ensures that you won’t run into any hardware-related issues. Your computer may not be able to run Chrome OS properly. Note: You’ll need a USB drive with at least 4 GB of space for this. 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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• How to Prepare a USB Drive for Safe Removal

  Shows the link between a drive letter, its disk number, and the disk's device instance.

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• How to partition a fully used hard drive

  - by MineCraftMan39

  I installed Ubuntu on my laptop which when I got it I had Fedora 13 installed on it as the OS. Now I want to install Fedora 18 in a dual boot with Ubuntu. Problem is when I installed Ubuntu, I didn't partition for dual boot and I gave the entire hard drive to Ubuntu and no longer have the space to dual boot. How can I lower the partition on Ubuntu to make space on the hard drive for Fedora? I want to split the hard drive 50/50 between the two. Thanks in advance.

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• Can't find my DVD drive in Ubuntu 12.04

  - by user72953

  I am completely new to Linux, due to some problems in my Windows I decided to give Linux a try. I am quite liking it accept for some minor issues. The biggest of them is that I cannot find my DVD drive in Ubuntu. After I insert the disk, the drive's green light flickers and then nothing. I don't get anything on my unity bar or desktop. There is no folder inside my /dev folder which indicates a dvd drive. There is a cdrom folder in my root folder but nothing is there. If you guys know what's wrong, I'd appreciate the help. Am a complete newbie so don't expect me to know anything about Ubuntu, although I have spent lots of hours in last 2 days googling my issue so I have basic information...

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• How to install an OS on a external hard drive

  - by Nrew

  I made a little research before coming here. And found out that I need to disconnect all internal hard drive before proceeding. http://www.pendrivelinux.com/installing-ubuntu-to-a-usb-hard-drive/ Here's my question: If I install Windows XP or Ubuntu on an external hard drive. Would it be universal? Can I use it or run it on any computer. Assuming that the bios allows you to boot from USB hard drive. Or even not because there's PLoP Bootmanager And has the considerable amount of memory and processor power to run the OS. What other things to consider when installing an OS in an external hard drive? Is installing in the external hard drive the same as when installing in an internal hard drive? Can I also boot multiple OS? What are the things to consider when doing this? And if you have a tutorial there. Showing how to install an OS in an external hard drive. Please link.

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• Do I need to be worried about these SMART drive temperatures?

  - by Steve Lorimer

  I have 5 hard drives in a machine sitting in a cupboard. /dev/sda is a 500GB Seagate drive, and is the boot disk. /dev/sd{b,c,d,e} are 2TB drives in a raid6 configuration. smartctl is showing significantly higher temperatures (like ~140 degrees celsius) on the raid drives than the boot drive. Do I need to be worried? /dev/sdb and /dev/sde are new Western Digital Black drives (new=1 week) /dev/sdc and /dev/sdd are 5 year old Hitachi drives /dev/sda [SAT], Temperature_Celsius changed from 40 to 39 /dev/sdc [SAT], Temperature_Celsius changed from 142 to 146 /dev/sdc [SAT], Temperature_Celsius changed from 146 to 142 /dev/sdd [SAT], Temperature_Celsius changed from 142 to 146 /dev/sda [SAT], Airflow_Temperature_Cel changed from 61 to 62 /dev/sda [SAT], Temperature_Celsius changed from 39 to 38 /dev/sde [SAT], Temperature_Celsius changed from 107 to 108 /dev/sdb [SAT], Temperature_Celsius changed from 108 to 109 /dev/sdc [SAT], Temperature_Celsius changed from 146 to 150 /dev/sdc [SAT], Temperature_Celsius changed from 146 to 150 /dev/sda [SAT], Airflow_Temperature_Cel changed from 62 to 61 /dev/sda [SAT], Temperature_Celsius changed from 38 to 39 Update: Adding detailed drive information as per request: /dev/sda =========================== smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.9.10-100.fc17.x86_64] (local build) Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Seagate Pipeline HD 5900.2 Device Model: ST3500312CS Serial Number: 5VV47HXA LU WWN Device Id: 5 000c50 02aad5ad6 Firmware Version: SC13 User Capacity: 500,107,862,016 bytes [500 GB] Sector Size: 512 bytes logical/physical Rotation Rate: 5900 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS T13/1699-D revision 4 SATA Version is: SATA 2.6, 1.5 Gb/s (current: 1.5 Gb/s) Local Time is: Tue Jun 3 10:54:11 2014 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled /dev/sdb =========================== smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.9.10-100.fc17.x86_64] (local build) Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Device Model: WDC WD2003FZEX-00Z4SA0 Serial Number: WD-WMC1F1398726 LU WWN Device Id: 5 0014ee 003b8bd25 Firmware Version: 01.01A01 User Capacity: 2,000,398,934,016 bytes [2.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 7200 rpm Device is: Not in smartctl database [for details use: -P showall] ATA Version is: ACS-2 (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) Local Time is: Tue Jun 3 10:54:11 2014 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled /dev/sdc =========================== smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.9.10-100.fc17.x86_64] (local build) Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Hitachi Deskstar 7K3000 Device Model: Hitachi HDS723020BLA642 Serial Number: MN1220F30WSTUD LU WWN Device Id: 5 000cca 369cc9f5d Firmware Version: MN6OA580 User Capacity: 2,000,398,934,016 bytes [2.00 TB] Sector Size: 512 bytes logical/physical Rotation Rate: 7200 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS T13/1699-D revision 4 SATA Version is: SATA 2.6, 6.0 Gb/s (current: 3.0 Gb/s) Local Time is: Tue Jun 3 10:54:11 2014 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled /dev/sdd =========================== smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.9.10-100.fc17.x86_64] (local build) Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Model Family: Hitachi Deskstar 7K3000 Device Model: Hitachi HDS723020BLA642 Serial Number: MN1220F30WST4D LU WWN Device Id: 5 000cca 369cc9f48 Firmware Version: MN6OA580 User Capacity: 2,000,398,934,016 bytes [2.00 TB] Sector Size: 512 bytes logical/physical Rotation Rate: 7200 rpm Device is: In smartctl database [for details use: -P show] ATA Version is: ATA8-ACS T13/1699-D revision 4 SATA Version is: SATA 2.6, 6.0 Gb/s (current: 1.5 Gb/s) Local Time is: Tue Jun 3 10:54:11 2014 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled /dev/sde =========================== smartctl 6.0 2012-10-10 r3643 [x86_64-linux-3.9.10-100.fc17.x86_64] (local build) Copyright (C) 2002-12, Bruce Allen, Christian Franke, www.smartmontools.org === START OF INFORMATION SECTION === Device Model: WDC WD2003FZEX-00Z4SA0 Serial Number: WD-WMC1F1483782 LU WWN Device Id: 5 0014ee 3002d235c Firmware Version: 01.01A01 User Capacity: 2,000,398,934,016 bytes [2.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Rotation Rate: 7200 rpm Device is: Not in smartctl database [for details use: -P showall] ATA Version is: ACS-2 (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 1.5 Gb/s) Local Time is: Tue Jun 3 10:54:11 2014 EST SMART support is: Available - device has SMART capability. SMART support is: Enabled

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• How to backup a NAS drive to a USB drive?

  - by Tim Murphy

  How would you backup 600+ GB of data on a NAS (Network-Attached Storage) drive to a USB external drive? The NAS drive does not contain mission critical data nonetheless I wish to make weekly copies of it just in case. The NAS drive is almost exclusively used as an archive dump and is rarely updated. However the backup strategy used must have a simple restore procedure so I can confidently say the data now on the NAS drive is exactly how it was at the time of backup. I did try xcopy but seemed like it would take many-many hours and eventually crashed with insufficient memory. http://www.ctunion.com/node/114 suggests I would need to use xxcopy instead due to folder/file name lengths. My concern with xcopy/xxcopy is the length of time it takes. Hoping something else is faster. NAS drive is DLink DNS-313. 1TB drive installed. Connected to router via Ethernet cable. USB drive is Seagate 1TB. Can be connected to Windows Vista (preferred) or Windows 7 PCs. Both PCs are usually connected Wirelessly however ethernet cable can be used during backup to speed up the process.

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• What is the quickest reliable way to backup a NAS drive to a USB drive?

  - by Tim Murphy

  How would you backup 600+ GB of data on a NAS (Network-Attached Storage) drive to a USB external drive? The NAS drive does not contain mission critical data nonetheless I wish to make weekly copies of it just in case. The NAS drive is almost exclusively used as an archive dump and is rarely updated. However the backup strategy used must have a simple restore procedure so I can confidently say the data now on the NAS drive is exactly how it was at the time of backup. I did try xcopy but seemed like it would take many-many hours and eventually crashed with insufficient memory. http://www.ctunion.com/node/114 suggests I would need to use xxcopy instead due to folder/file name lengths. My concern with xcopy/xxcopy is the length of time it takes. Hoping something else is faster. NAS drive is DLink DNS-313. 1TB drive installed. Connected to router via Ethernet cable. USB drive is Seagate 1TB. Can be connected to Windows Vista (preferred) or Windows 7 PCs. Both PCs are usually connected Wirelessly however ethernet cable can be used during backup to speed up the process.

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• File copying utility like rsync with error handling like ddrescue, for data recovery from a hard drive with bad sectors or hardware failure

  - by purefusion

  I have a hard drive with either bad blocks or sectors that are failing to read due to potential mechanical issues, such as a bad disk head, bad motor, or some other issue that is causing the hard drive to read data excruciatingly slowly and with lots of read errors. I'm seeing an average of 50 KB/sec, with some reads dropping below 10 KB/sec, and frequently it gets stuck on a file or sector altogether, usually for quite a long time—from 2-10 minutes or more (when using rsync, before it times out). Speed seems to vary wildly, and it gets stuck on files a lot, and when it finally gets "unstuck" it only seems to last for a short burst before it gets stuck again. The drive is also very quiet with only an occasional sound of files copying (usually when it gets stuck/unstuck for a brief time, before getting stuck again). Thus, there are none of those evil sounds that are normally associated with HDD death. Someone suggested that the problems sounded like they might be caused by a misaligned disk head, which requires a lot of re-reads before it finally reads data with success. Sounds plausible, but I digress... Anyway, the problem with rsync is that it seems to have no decent error handling support. Obviously, it wasn't meant for use in recovering data from failing hard drives, but all the so-called "data recovery" utilities out there that are meant for such use usually focus on recovery of deleted files or messed up partitions, rather than copying files off dying hard drives. Deleted file recovery is not what I need, obviously, so perhaps you can understand my disappointment in not being able to find what I'm after yet. Naturally, this is where you'd probably say "You should use ddrescue!" Well, that's all fine and dandy, but I've already got most of the data backed up, so I just want to recover certain files. I'm not concerned with trying to recover a full partition block-by-block as ddrescue does. I am only interested in rescuing just specific files and directories. Ideally, what I'd like is some sort of cross between rsync and ddrescue: something that lets me specify source and destination as directories of normal files like rsync (rather than two full partitions as ddrescue requires), with a way to skip files with errors in an initial run, and then allows me to attempt recovery of those files with errors in a later run (with a slightly altered command, of course), perhaps even offering an option to specify the number of retry attempts ...just like how ddrescue works with blocks, only I want a utility that works with specific files/directories like rsync does. So am I daydreaming here, or does something out there exist that can do this? Or, maybe even a way to make rsync or ddrescue work in such a way? I'm really open to whatever solutions might work, so long as they let me choose which files I want to "rescue", and can skip files with errors in the initial run, and try/retry those errors again later. So far I've tried rsync with the following options, but it often gets stuck on a file for longer than the timeout, and ideally I'd just like it to move on to the next file and come back later to the files it gets stuck on. I don't think that's possible though. Anyway, here's what I've been using up till now: rsync -avP --stats --block-size=512 --timeout=600 /path/to/source/* /path/to/destination/

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• Can't detect hard drive on Macbook Pro

  - by MartinMoizard

  I changed a few month ago the config of my Macbook Pro with the following: I bought a SSD hard drive I removed the hard drive of my Mac book Pro and installed there my brand new SSD Then I removed my DVD drive and installed my hold hard drive instead with a caddy Everything was working great until today when I couldn't access anymore to my old hard drive because it is not detected anymore. Sometimes Mac OSX is mounting it but it takes like 15 min to browse a simple folder. I opened my laptop to have a look at the problem. It seemed like the optical drive connector was not plugged correctly to the motherboard (that connector: http://cl.ly/2T0X2e1j0J1g47061d1t). So I plugged it correctly and reboot. It didn't fix my problem. Then I tried to put my SSD in the caddy and to boot: no hard drive was detected. So I guess there is something wrong either with the caddy, either with the optical drive connector, or either with the plug that is on the motherboard. So my question is, how can I know where the problem comes from?

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• Installed Windows 7 Ultimate on D Drive and previous Windows 7 Enterprise on C Drive has stopped starting up

  - by teenup

  Please please help! I have installed Windows 7 Ultimate on same hard drive on D Drive on my laptop and the previous Windows 7 Enterprise which was installed on C Drive is not booting up now. When I turn on my laptop, I see two Windows 7 on the screen, when I select newer one, it starts, but when I select older one which is Enterprise edition, system won't start and I get the DOS black screen with this error message: Windows Boot Manager Windows failed to start. A recent hardware or software change might be the cause. To fix the problem: Insert your Windows installation disc and restart your computer. Choose your language settings, and then click "Next." Click "repair your computer." Info: The boot selection failed because a required device is inaccessible. I notice that when I run the newer OS installed, the previous OS's drive (Which is D: now instead of C:) has become unusable and when I double click it, it asks me to format the drive. The data, that I had on my D Drive (Which is now C Drive for new OS), I had copied it to a network path and it is available. It was containing Windows 7 Users folder which I copied at that time when installing new windows. I have copied that Users folder again to the new OS's C Drive thinking it would run again, but of no use. Please please please...if someone can help...It is extremely required for me. Thanks a lot in advance.

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