Ubuntu Installation :: Recover Corrupted System Files?

Jul 26, 2010

before i proceed,I'll like to say that I'm a complete newbie, but enjoying my time with Ubuntu.

Recently, due to hard disk failure, some of the System files got corrupted, I have no idea to which files, but booting Ubuntu from the latest kernel is not working, instead I have to select the previous version from the grub screen.

How to recover these files? Is there a way by which Ubuntu automatically scans and repairs the system files.

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Ubuntu Installation :: Netbook Crashed / Windows XP System Files Corrupted?

Sep 1, 2011

My HP Netbook crashed. The Windows XP system files corrupted and Windows absolutely will not run. I planned on using Ubuntu to recover it, and then install Ubuntu permanently to save it in the future. Before you ask, every other utility has failed on me. UBCD included, which did nothing but provide me with errors upon errors just trying to run it.

The netbook has no CD drive.The only internet around is a wireless signal... my netbook has a broadcom wireless card that is never recognized. I'm using someone elses working laptop to connect online and get things I need, make boot devices, research for help, etc.This laptop has barely any hard drive space. Currently it has 1 gb remaining for doing anything.I have three flash memory devices:2 gb SD card. My netbook refuses to recognize it as a boot device.2 gb flash stick (that's actually an mp3 player). My netbook refuses to recognize it as a boot device.512 mb flash stick. This DOES work as a boot device.

So far my 512 mb flash stick has run Damn Small Linux and Ubuntu Minimal on my netbook. Of course, both are useless because the netbook cannot access internet, nor does either OS recognize my wireless card. This flash stick is, obviously, too small for a regular Ubuntu installation or any other Linux distribution that can help (as far as I know).

So, in order for this to work, I have to be able to do one of the following:

Install Ubuntu from a different OS, like Damn Small Linux or something small enough to boot on my 512 mb stick. Ubuntu can be put on one of the other, larger devices, maybe to be accessed for installation. No idea how to do this, let alone safely.

Install Ubuntu Minimal OFFLINE. This question was asked multiple times on these forums and none were answered. Is there a way to run minimal, and use offline sources for the install?

Get the normal Ubuntu installer under 500 mb. Its overwhelmingly frustrating that I'm just barely unable to do this. I've read of Ubuntu Customization Kit, which ended up being lots of useless files and reams of gobbldegook. I've heard Ubuntu is packed with additional, nonrequisite software which makes it so large. Why can't there be a halfway version between normal and minimal?? Not everyone has internet and not everyone has a CD drive or large USB stick! Is there a way this can be accomplished? Does this version exist?

I have limited time and resources. Before you ask, no, I cannot afford a larger USB stick. I'm pinching pennies right now and there's nowhere near here that sells them anyway.

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Aug 7, 2010

I'm running dual boot with Vista and Ubuntu Lucid Lynx. for few days i was running Ubuntu only, downloaded some files and created some directories. few minutes ago, i switched to Vista to see something and i wanted to burn some of the files i downloaded using Ubuntu but couldn't find those folders.

i thought maybe its related to different file system or something so i switched back to Ubuntu and surprise! my folders are not there, instead i got a file, of unknown type with the same name as the folder had! in another folder case it's was an image (some print screen of my browser screen - Mozilla) and again with the name of what was the folder! first - what the hall had happened? second - can i recover my data somehow?

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Jul 3, 2011

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Is there a way to recover individual files from the second harddrive. Now if I boot or open it through live cd, all I see in the linux mint file systems. I want to aleast recover my CV/resume from the second drive. The second drive is a single ext4 file system The old drive is completely dead, it doesnt even get recognized when I attach it to SATA.

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May 20, 2010

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Nov 13, 2010

I had a perfectly working Western Digital 250GB external usb hdd about 30 minutes ago. It has about 130GB of data I spent 3 hours copying to it yesterday from my Ubuntu laptop. Just to test it, I plugged it into an older Windows XP machine, and it seemed to work just fine. Then I tried to do the "Safely Remove Hardware" thing. It told me that it could not remove the external drive because another program was accessing it. So okay, I just wait a minute or two. Try again -- same thing. Tried it several more times, waiting a minute or two between each try -- same thing. Then suddenly a message pops up -- cannot write to drive. I also get another error: drive is corrupt, run chkdsk utility. Makes no sense. I was accessing files from the drive from within Windows just fine minutes before.

So since it won't "unmount safely", I just unplug it (probably a mistake, but I didn't see that I had any other choice at the moment), then try mounting it using a LiveCD of Puppy Linux -- Puppy will not mount it, just gives an error but no details.

My Ubuntu laptop, however, is no longer usable -- after I copied the 130GB of files I wanted to save to my external hdd, I attempted an upgrade of Ubuntu. It hosed. I'm still on that Puppy Linux LiveCD right now as I type.

So then. I KNOW this external hdd should be recoverable. I didn't do anything to it except let Windows screw up its ability to be mounted/unmounted, somehow. But I do not know how to go about trying to rescue it. What are the tools I should use? Is there something I can download somewhere that I can burn to a bootable CD or something that can fix a broken NTFS drive/partition? It would almost have to be something bootable at this point since I don't know how to install anything new on Puppy. Wasn't there an "Ultimate Linux Bootable Rescue CD" or something like that a while back? I can't remember it's exact name now.

If worst comes to worst, I suppose I could always reformat the external hdd and then copy the files over to it again. I still have all my files on my laptop's hard drive and Puppy can see them -- the Ubuntu upgrade I attempted did not overwrite all my stuff. But....I would just rather avoid having to spend another 3 hours or more today doing that. All my files are already on the external....I just want to fix it so that I can see them again.

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Jan 23, 2010

I had some bad luck today when I was trying to fix an account that had trouble with FTP. I decided to remove the user and add him again and reset all configuration. Anyhow, to make things short, I accidently typed rm /* -R -f and without looking hit the enter button, as soon as I realised what I wrote I hit ctrl+c. Too bad the /bin/ folder was gone by this time and standard commands like ls didn't execute anymore.

My question is if there is any way to recover these files by a system repair or something? The server is used to host a heavy loaded site which can't afford any downtime, and silly me didn't make a backup of the whole HDD, just the important folders (not the system files).

Currently I don't have the balls to restart the server as I know this will probably turn into a dissaster. I also don't have straight access to this server since it is located in a datacenter (I can go there if absolutely necessary but I rather don't).

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I downloaded latest Ubuntu version 10. I bruned it to CD disc. I run WUBI.exe. Some files copied to the hard drive, but the error message interrupted in the middle of the installation process. It said unable to install -- permission denied. I don't see what is wrong. My Windows XP is full administration control. All the files should be able to write to drive c without any problem. What is the cause? Could files in ISO image be corrupted?

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# Partition clearing information
clearpart --all --initlabel
or

[code]....

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Jan 24, 2010

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Oct 12, 2010

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Mar 24, 2011

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Jun 1, 2010

Plot: During the last 3 days I have been losing documents when the pc freezes and as consequence the "recovered" document is later interpreted as "corrupted" I click to "fix-repair" it but the entire 400 pages doc gets deleted in a dc of only 4 kbytes!Okay, so because it happened twice I used the Evolution mail to send from time to time a copy from my actual work (not matter the document is opened, right?)

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Why the backup file of such doc is also with nothing? Where is the backup folder for Office docs?

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Ubuntu Installation :: Recover Deleted Bootloader Files By Mistake (not GRUB)?

Mar 26, 2010

I cannot boot into by Ubuntu 9.1 machine.... Trying either GUI or rescue mode gives me the following error messages (which i copied by hand since they were in cli)

Code: mount : mounting /dev/disk/by-uuid/64e5cb0d-058a-4a4c-af4b-7afb6427a72e3 on root failed : invalid argument

mount : mounting /sys on /root/sys failed : no such file or directory
mount : mounting /dev on /root/dev failed : no such file or directory
mount : mounting /proc on /root/proc failed : no such file or directory

Target doesnt have /sbin/init The only thing i remember doing before this is deleting some bootloader files... but they were on another disk so I didn't think that it would affect my ubuntu install. Guess I was wrong how I can recover my system?

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May 14, 2009

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Aug 18, 2011

I have all of my music in mp3 form on an external HD. When I copy it to my home folder for use in Banshee 2.0, some of the music files become corrupted.When these copied mp3s are played, they have annoying, intermittent distortion throughout some of the songs. In an effort to try and isolate the problem, played one of the distorted songs directly from the file on the external HD, and it played flawlessly. I then downloaded Clementine and had the exact same distortion on the playback from the copied file, and then no distortion from the external HD file.

So at this point, it seems like the mp3 are getting messed up when they are being copied from the external HD to the computer.I am using a USB 2.0 port for the file copying.

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Ubuntu :: Corrupted EXT3 File System?

Feb 9, 2011

I am using Ubuntu since release 8.10, but it is first time when i can`t solve problem

when i tried to create new NTFS partition on unallocated disk space with Paragon Partition Manager (damn, that was stupid). Process was aborted with error (later i finally made it with Gparted without problems)

After reboot mine Ubuntu say:

Code:
Errors were found while checking the disk drive for /

Press F to attempt to fix errors, I to ignore, S to skip mounting or M for manual recovery. I pressed "F" but that had help only for a boot and doesn`t really fix error :`(

Later i booted from liveCD and had checked partition (/dev/sdb1; file system - ext3) with gparted (result - aborted fixing process with error) Now i can`t even boot from that partition and even mount it from other linux system.

mine fdisk -l
Code:
/dev/sdb1 * 1 5957 47849568 83 Linux - problematic partition (unmountable)
/dev/sdb2 5958 29983 192988845 7 HPFS/NTFS

[Code]....

PhotoRec recover most of my files, but i need complete partition.

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Apr 16, 2011

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Apr 23, 2011

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Jan 19, 2011

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I also have 4x 1TB drives in a raid 5 using mdadm, and 2x 500GB drives in a raid 1 also with mdadm.

I put the two arrays in lvm using:

I then used "lvcreate" to make storage/backup 300GB, and the rest went to storage/media (approx. 2TB usable). I put an xfs filesystem on both and mounted them.

All was working fine until the system drive shorted out and died on me this morning. As far as I can tell, all my other drives and everything else is fine. I do a daily rsnapshot of the filesystem, which of course is residing on storage/backup (stupid, I know). So I have full backups of everything, but I'll have to put a new hard drive in and reinstall Debian before I can restore everything.

I've reinstalled before and simply reassembled mdadm arrays and remounted them before with no problems, but this is the first time I've used lvm, so I'm not sure what I have to do to restore everything. Is it as simple as reinstalling the system then doing a:

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May 20, 2011

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Can i just use something like unetbootin, reinstall ubuntu, then drag all the files over?

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Aug 1, 2010

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Jul 21, 2010

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Aug 10, 2010

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I"m trying to decide whether to use ReiserFS, Ext4, or another file system. Basically, I want something that:

* Won't get corrupted when the power fails;
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Nov 21, 2010

Recently I installed openSuSE 11.3 x64 on PC with Intel motherboard, 4GB RAM & two of 1TB WD RE3.Of course I set RAID1 during installation After some struggle with GRUB which pointed to wrong devices after installation I started to work. But suddenly I found that file system is corrupted after every reboot (It does not depend on what I use and what the way I use - reboot, shutdown -r now or even just poweroff - everything follow to:

Starting MD Raid mdadm: /dev/md2 has been started with two drives
mdadm /dev/md3 has been started with 2 drives
mdadm /dev/md4 has been started with 2 drives
mdadm /dev/md5 has been started with 2 drives

[Code]...

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Apr 13, 2011

I am attempting to copy files from one server to an external USB drive on a second server. Both servers are running custom RedHat Linux, kernel 2.6. Both are setup as Check Point SecurePlatform (one is a log server and the other a management server). I am trying to archive files from one (HP DL380 G5) to the second (HP DL380 G6). I am not able to archive directly to the external usb drive when connected to the HP DL380 G5 (data gets corrupted and switches to read-only access). The external USB drive has no issues when connected to the HP DL380 G6 server, thus my reason for trying to copy the files across servers.

When I attempt to use scp to copy files between the server, I am prompted for the password. Once entered the debug shows the authentication is successful, but then no files are copied (see log below). I have tried searching for potential answers, but none have panned out. Unfortunately I can't yet post the actual scp debug log output as some of the text is viewed as a URL and not yet allowed for me. I have changed all the atsign symbols to '(a)' to avoid the URL inference.

Output log from scp attempt follows:
[Expert(a)server1]# scp -p -r -v /var/fromhere/* copyfile(a)server2:/media/disk/tohere/
Executing: program /usr/bin/ssh host server2, user copyfile, command scp -v -r -p -d -t /media/disk/tohere/
OpenSSH_3.6.1p2, SSH protocols 1.5/2.0, OpenSSL 0x0090707f
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: Connecting to server2 [192.168.10.3] port 22.
debug1: Connection established.
debug1: identity file /root/.ssh/identity type -1 .....
debug1: Exit status 1
lost connection
[Expert(a)server1]#

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May 18, 2011

I'm new to openSUSE, this is the first time i try to install openSUSE version 11.4. on my IBM Thinkpad T43 (on which SUSE Linux version 8.0 has been running before without problems). I have downloaded the ISO images and successfully burned the ISO images on a blank DVD. Having placed my openSUSE DVD in the drive and rebooted my laptop I can see the boot screen.

I then select installation with arrow up/down and press enter. Choosing language and keyboard layout works fine, as well as accepting the license agreement. However, when it comes to 'System Probing' the installation stops at 'Search for system files'. The cursor shows a little turning disk but the rest of the screen is blocked.

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