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  • unknown filsystem with grub rescue caption cannot boot

    - by Dom
    I just recently partitioned my hard drive and I got this error when booting Ubuntu on that drive. unknown filesystem. With the grub rescue terminal. I did some research and tried to download super grub disk but I cant seem to fix it with that. I have two hard disks. One with Windows Vista on it and the other with Ubuntu which is the one I partitioned. There was 100GB reserved for all the Ubuntu partitions that I needed and the rest was split into two partitions, one for backup folders for my Windows machine and the other for music production which is the one that I created. The space used to created that was shrunk from my backup partition so I didn't mess with any of the Ubuntu partitions. As of now there are a total of 5 partitions. I also downloaded Rescatux which is another Super Grub Disk for Grub 2 not knowing which grub I had. It still didn't work. In Super Grub Disk I tried to swap the hard disk because that was what was said to do in order to fix the grub, that didn't work it said it was unsuccessful. I even tried to unplug the Windows hard disk and run Super Grub Disk and that wasn't successful either. Is there another way I can fix this? Please any help would be greatly appreciated. I would like to have a nice step by step response.

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  • SYSTEM hive of the register is causing computer to BSOD on boot

    - by FernandoSBS
    After some work on my computer, perhaps some updates installs, it didn't boot anymore. BSOD on windows logo loading. After some research I've found out that if I replace the SYSTEM hive of the register with the last backup it boots ok, but of course goes back to an old stage of machine setup. So my question is: where does register stores hardware and/or updates/software that loads in the machine boot, so that I can check which program is producing that BSOD and disable it? System is Win 7 64 bits SP1

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  • dual boot missing files on ntfs

    - by yehuda
    I have 3 partitions: one for win7 (ntfs), one for Ubuntu (ext4) and one just for data (ntfs so both operating systems can see them). My problem is that I had stored some files on the data partition using ubuntu and when i booted win7 all that data was gone! After that I couldn't find the files even when using Ubuntu. My files were simply GONE :( Is there something I can do in Ubuntu or is it just windows problem?

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  • Unknown filesystem with GRUB rescue caption cannot boot

    - by Dom
    I just recently partitioned my hard drive and I got this error when booting Ubuntu on that drive. unknown filesystem followed by the GRUB rescue terminal. I did some research and tried to download super grub disk but I cant seem to fix it with that. I have two hard disks. One with Windows Vista on it and the other with Ubuntu which is the one I partitioned. There was 100 GB reserved for all the Ubuntu partitions that I needed and the rest was split into two partitions, one for backup folders for my Windows machine and the other for music production which is the one that I created. The space used to created that was shrunk from my backup partition so I didn't mess with any of the Ubuntu partitions. As of now there are a total of 5 partitions. I also downloaded Rescatux which is another Super GRUB Disk for GRUB 2 not knowing which grub I had. It still didn't work. In Super Grub Disk I tried to swap the hard disk because that was what was said to do in order to fix the grub, that didn't work it said it was unsuccessful. I even tried to unplug the Windows hard disk and run Super GRUB Disk and that wasn't successful either. Is there another way I can fix this? Please any help would be greatly appreciated. I would like to have a nice step by step response.

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  • How do I secure Sql Server 2008 R2

    - by Mark Tait
    I have both a dedicated and a VPS (from Fasthosts) virtual server - the web sites/applications I run on these, access Sql Server stored on the same web server. Until now, I have logged onto Sql Server on both the deidicated and VPS server, from Sql Server Management Studio - until I noticed in my server application logs, multiple attempts to logon to Sql Server using the 'sa' username, but failed password. So someone/bot is trying hard (repeatedly every couple of hours, for approx 20 attempts during each instance) to log on... so obviously I have to lock down access to Sql Sever remotely. What I have done is gone into Configuration Manager, and in Sql Server Network Configuration - Protocols for Sql2008 and also in Sql Native Client 10.0 Configuration - Client Protocols - I have diabled Named Pipes, TCP/IP (and VIA by default). I have left Shared Memory enabled. I also disabled in Sql Server Services, the Sql Server Browser. Now the only way I can manage the databases on these servers, is by logging on to them via Remote Desktop. Can anyone confirm if this is the correct way of stopping anyone maliciously logging on to Sql Server? (I'm not a DBA or security expert - and there are hundreds of articles advising all different ways - but I was hoping for the experts here to confirm, or otherwise, if what I've done is correct) Thank you, Mark

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  • iptables secure squid proxy

    - by Lytithwyn
    I have a setup where my incoming internet connection feeds into a squid proxy/caching server, and from there into my local wireless router. On the wan side of the proxy server, I have eth0 with address 208.78.∗∗∗.∗∗∗ On the lan side of the proxy server, I have eth1 with address 192.168.2.1 Traffic from my lan gets forwarded through the proxy transparently to the internet via the following rules. Note that traffic from the squid server itself is also routed through the proxy/cache, and this is on purpose: # iptables forwarding iptables -A FORWARD -i eth1 -o eth0 -s 192.168.2.0/24 -m state --state NEW -j ACCEPT iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A POSTROUTING -t nat -j MASQUERADE # iptables for squid transparent proxy iptables -t nat -A PREROUTING -i eth1 -p tcp --dport 80 -j DNAT --to 192.168.2.1:3128 iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT --to-port 3128 How can I set up iptables to block any connections made to my server from the outside, while not blocking anything initiated from the inside? I have tried doing: iptables -A INPUT -i eth0 -s 192.168.2.0/24 -j ACCEPT iptables -A INPUT -i eth0 -j REJECT But this blocks everything. I have also tried reversing the order of those commands in case I got that part wrong, but that didn't help. I guess I don't fully understand everything about iptables. Any ideas?

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  • HOw to secure whm/cpanel centos server from javascript malacious code virus

    - by Master
    Recently my sites index.php code was replaced some malacious javascript virus code. I really don't know how did that entered into that page. Today when i tried to download that file via ftp then antivirus gave me the warning. So it means it was not entered from my computer. Is there any way to install some antivirus on VPS server with centos 5 , cpanel/whm so that those code should not be allowed to add. also what is mod_security . will it be helpful.

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  • black screen and blinking cursor for a while in ubuntu 12.04 during boot

    - by Soumyadip Mukherjee
    I've installed ubuntu 12.04.1 "rock solid" \m/ everything works fine apart from the fact that during startup...the usual purple screen and ubuntu logo doesnt appear...only a black screen and blinking cursor is visible...then after a while for a fraction of a second the ubuntu logo and purple screen comes and disappear to the login page...i tried plymouth but it didnt help in solving the problem...but i did end up changing the logo to a more artistic one :) any one plz help...my ubuntu is installed on my asus 1225c netbook.. thank you

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  • Solution for secure online remote presentation?

    - by Greg Joshner
    Hello, what is your (subscription free) solution to share a presentation with a number of users (below 50) that works without plug-ins in a browser and allows the presentation to be centrally controlled (and thus prevents participating users from "flipping forward")? I won't need print, save as or offline features, just showing and controlling a presentation centrally. Thanks a lot for your help!

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  • Custom daemon script: works, but does not run at boot / startup

    - by pearjoint
    this is Ubuntu 10.10 Maverick. I have the following shell script in init.d that I want to run as a "daemon" (background service with start/stop/restart really) at system startup. There is a symlink in rc3.d. I tried 4 and 5 too. (Ideally this would initialize before graphical login happens and before a user logs in.) IMPORTANT: the script works 100% as expected and required when testing this with service MetaLeapDaemon start and service MetaLeapDaemon stop. (This shell script calls a Python program which makes sure the appropriate .pid files are both created at startup and deleted at exit.) So generally it works fine but now my only issue is why it will not be run at any of the run-levels I tried. I know for sure it isn't run because the log file it normally creates does not get created. As you can see (by the lack of any uid:gid args in the start-stop-daemon commands) this would currently run only under root, is this forbidden in a default setup? Here's the script, pretty much your run-off-the-mill daemon script really: #! /bin/sh DAEMON=/opt/metaleap/_core/daemon/MetaLeapDaemon.py NAME=MetaLeapDaemon DESC="MetaLeapDaemon" test -f $DAEMON || exit 0 set -e case "$1" in start) start-stop-daemon --start --pidfile /var/run/$NAME.pid --exec $DAEMON ;; stop) start-stop-daemon --stop --pidfile /var/run/$NAME.pid ;; restart) start-stop-daemon --stop --pidfile /var/run/$NAME.pid sleep 1 start-stop-daemon --start --pidfile /var/run/$NAME.pid --exec $DAEMON ;; *) N=/etc/init.d/$NAME echo "Usage: $N {start|stop|restart}" >&2 exit 1 ;; esac exit 0

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  • Impossible to boot Ubuntu on a USB stick (OS X Montain Lion)

    - by user109513
    I know this has been discussed over and over but I still cannot run Ubuntu on a USB stick. Here's the step I followed: 1. I downloaded Ubuntu 12.10 (ubuntu-12.10-desktop-i386.iso) from http://www.ubuntu.com/download/desktop which I renamed 'ubuntu.iso'. I bought my Mac mid-2010, it has an Intel processor. 2. I formated my 16GB USB stick with HFS+ File System following this tutorial: http://www.switchingtomac.com/tutorials/how-to-format-a-drive-or-partition-with-the-hfs-file-system 3. I opened a terminal and typed: hdiutil convert -format UDRW -o ~/Downloads/ubuntu.img ~/Downloads/ubuntu.iso It created ubuntu.iso.dmg 4. I ran 'diskutil list' and identified the device node assigned to the USB. 5. I unmounted it: diskutil unmountDisk /dev/disk2 6. Then, I entered the command: sudo dd if=~/Downloads/ubuntu.img.dmg of=/dev/rdisk2 bs=1m. It seemed to work. A Mac message poped up saying that the system doesn't recognized the disk, I pressed 'ignore'. 7. I ejected the USB using diskutil eject /dev/disk2, then removed the USB. 8. I rebooted the computer, plugged the USB key, pressed ALT.I could see my Macintosh partition and my Windows partition, but couldn't see my USB stick. Any help will be very appreciated :) Victor

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  • Latest Boot Camp drivers for Windows 7

    - by roosteronacid
    I've just recently received my new MacBook Pro, and I've begun exploring Boot Camp; dual-booting Windows 7 Enterprise. I've heard chatter that there are some new Boot Camp drivers--newer than the ones that come with your OSX Show Leopard installation CD. But I'm having a hard time locating them. These updated drivers should fix a few issues with the trackpad, amongst other things. Can you guys point me in the right direction?

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  • Own server, multiple website: most secure PHP setup

    - by plua
    Hi there, We have a company server with a variety of websites. They are maintained by different people from within our company. All websites are public. The server access is limited to our company only. This is NOT a shared hosting environment. We are looking into securing the server, currently analyzing the risk related to permissions of files. We feel the highest risk is when files are uploaded and then opened/executed by the public. This should not happen, but an error in a script might allow people to do so (there are image uploaders, file uploaders, etc). Uploader scripts use PHP. So the question is: what is the best way of setting / organizing permissions of files and processes? There seem to be several options to run PHP (and Apache), and setting the permissions. What should we take into consideration? Any tips? We are considering mod_php and FastCGI, but perhaps given our situation other solutions are preferred?

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  • Ubuntu 12.10: Installing proprietary Nvidia driver causes freeze at boot

    - by Greg
    Ok, so I just installed Ubuntu on my laptop, and I immediately encountered an issue: the HDMI audio output won't work. Yes, I know about the sound settings thing where you have to select the HDMI option, but even when it's selected I get no sound out of the TV I'm hooking it up to. This is a dealbreaker for me, because my laptop speakers are terrible, it's one of the big reasons I use my TV monitor. So I decided to work on solving the problem by upgrading my Nvidia drivers. I switched to one of the propriety drivers offered in that software updating utility that comes with the OS, the one option that said (tested). Viola, sound over the HDMI is now working. Unfortunately, this now brings me to my next problem: when I reboot Ubuntu with this or any other proprietary driver installed, it freezes when it tries to load my desktop. As in I can see my wallpaper, but no icons or options of any kind. The system is totally frozen, and gives me one of those "we've experienced an error, do you want to report it messages." So there's my bind. I need HDMI audio out, that's a total dealbreaker for me, but installing the drivers that give me that capability crash the system. Does anyone have any idea what's causing this

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  • About uninstallation of Ubuntu to allow dual-boot

    - by Palas Ghosh
    I had windows XP and windows 7 previously. I wanted to keep windows XP and replace windows 7 by Ubuntu in a specific drive of hard disk. During installation of Ubuntu I found option replace windows 7 by Ubuntu and I did it. now I found that windows XP has also gone and Ubuntu is occupying the area of whole hard disk. Now I want to uninstall or format the hard disk because Ubuntu is new to me and I am not comfortable with Ubuntu only right now. I want to keep both windows XP and Ubuntu. so how can I uninstall Ubuntu or format hard disk?? please help....Is the formatting is possible by inserting windows XP CD?? Or is there any other way so that without uninstalling Ubuntu I can also install windows XP?

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  • xubuntu 12.04 slow boot

    - by user76390
    my xubuntu 12.04 fresh installed boots in more than 30 seconds, here the first big gap in dmesg: [ 1.984795] firewire_core: created device fw0: GUID 000ae4060034203a, S400 [ 2.336568] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) [ 15.465275] ADDRCONF(NETDEV_UP): eth0: link is not ready [ 15.503348] udevd[331]: starting version 175 once booted everything works fine (networks included) thanks for help!

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  • Boot delay and mouse lag at login after Ubuntu 12.04 update

    - by Roshan George
    I am facing these weird problems after updating Ubuntu 12.04 with apt-get update && apt-get upgrade: It takes too much time to come to the Plymouth theme after selecting Ubuntu from the grub menu. Is it possible to correct this? On the login screen, before entering the password, whenever I move the mouse, it is kind of lagging/stuck. Only after entering the password and pressing Enter, it works normally. I think this may be because of the updated kernel. If so, is it possible to downgrade the kernel to the previous one ? If that is not the reason, what can be the problem?

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  • failing to boot after ''succesfully'' restoring from deja dup backup

    - by Jake
    Before upgrading to 12.04, I completely backed up 11.10 oneiric with deja-dup. In 12.04 I had major nvidia-related problems, so I decided to roll back to 11.10. I tried to restore from the backup and at first failed several times with "an uknown error occured". I reformated my hard drive, installed a fresh copy of 11.10 on the hard drive, and tried the restore again, with no success. I then booted from a live usb and ran the restore again after mounting the file system. I chose the restore location to be "file system" and the restore completed successfully, or so it said. After restarting my PC, all I got was a 'no operating system' error. I remounted my partition chrooted and installed the kernel. I am working now but my question concerns the restore. Why didn't the restore worked? I'm hoping someone has thought of something that I have not.

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  • Secure copying (file transfer) between two Linux servers in the same datacenter (Linode)

    - by MountainX
    I have two Linodes in the same data center. I want to copy files from one to the other each night or on demand (for about the next month, until this project is finished). So I'm thinking about using rsync. My question is how do I set up the two Linode servers to communicate via private IP addresses securely? Both servers are SSH hardened, they use denyhosts and have a fairly restrictive iptables setup. I know I need to first assign private IP addresses to each server, then configure static networking according to this guide. What is next? What SSH or iptables settings are needed to allow these two servers to communicate? What further info do I need to supply in this question? I'm looking for a basic step-by-step guide for how to do this.

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  • Which wireless keyboard is most secure?

    - by Axxmasterr
    I want to allow someone to use a keyboard wirelessly but I am concerned that the user passwords will be sent across the wire too. Is there a wireless keyboard that encrypts the keystream? I bought an IR keyboard setup however it lacks the range to be useful more than a few feet away from the detector. I need a range of 10 feet.

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  • Windows 7 removes boot camp drivers on reboot

    - by beemzet
    I'm installing boot camp on 64 bit windows 7 home premium from a leopard disc. During installation I get a couple of errors saying that some driver publishers are not registered or something and I install them anyway. After reboot windows tries to repair something and reboots again. When I finally log in, there is no boot camp any more. Any ideas how to solve this? Thanks btw, I'm using Macbook Pro 15 inch Santa Rosa (late 2007)

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  • does not boot after install, my troubleshooting and google fu have failed me

    - by chris
    I can only get an install to "stick" if I use shred to zerofill my drive first. Otherwise, when I install ubuntu or lubuntu 12.04, I will get "grub rescue: out of disk". With the aforementioned (completely default) install on top of a zerofilled drive, then rebooting after installing updates will tell me there is no operating system. I don't even get to grub. Installing on top of the failed install, while choosing "erase ubuntu 12.04 and reinstall", I get the grub rescue: out of disk error. The hard drive has been repeatedly tested and does not have any read or write errors. I've used check disk for errors on the pen drive I'm installing from and it comes up clean as well. The system is an inspiron 6000, with 1gb ram and a 250 gb hard drive. I'm typing this from a live cd on the same machine. What gives?

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