Ubuntu :: Recover Data After LiveCD Filesystem Change?
Sep 1, 2010
120 GB HDD. All ext4. Wanted to partition it into 60 gig ntfs, and 60 gig ext4 for dual install. Booted up the LiveCD. Clicked on the partition to modify. Selected /windows as mount point. Change took place. Now, my disk shows up as 57 GB FAT (almost all of which is free) and 60 GB of unallocated space. Any way to recover it? I'm sue the data is in the 60 GB of unallocated space. While I have a back up of some of the data, I'm going to be losing quite a bit if I can't recover this...
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Dec 1, 2010
Recently I was forced to hard reset my computer a couple of times (mostly out of frustration) and due to my idiocy i was confronted with the standard Kernel Panic message at bootup. I tried running an fsck from live cd which corrected a bunch of errors but to no avail (as far as getting rid of the Kernel Panic msg). I then tried to mount the filesystem by accessing it from live cd (and later even installed ubuntu on a small leftover partition to get rid of the annoying live cd lag) but it says that I don't have access to my home or root folder. Mounting from command line gave the same issue.
So now to the question. Is there a general procedure to access data in my corrupt filesystem if it is encrypted?
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Aug 5, 2011
On my drive I had 2 partitions for an Ubuntu 9.04 (swap, /) and one partition for Windows. I figured out that I should upgrade my Ubuntu, so I deleted the "/" partition and in its place created 2 new partitions (/, /home) .
After installing the latest Ubuntu 11.04, I realised that although I had backuped everything I needed in a 2nd disk and I could access those folders and their data from my Ubuntu 9.04, both my Windows and the 11.04 can locate neither the folders nor the data now. I have no idea why this happened (perhaps some issue with the mounting?) I have tried the trial version of Stellar Phoenix linux data recovery tool, but it cannot locate the old partitions.
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Feb 16, 2010
Original disk:
XP NTFS primary
Linux / ext4 logical
Linux /home ext4 logical
Win 7 NTFS logical
NTFS data logical
swap space
NTFS recovery partition
I tried to install linux, as there was a problem with XP overwriting grub, I chose write grub to /dev/sda8 (which is where the linux install was appearing earlier).
I guess this borked the filesystem somehow. Now the NTFS data partition and the swap space are appearing as one free space.
Well actually before that some linux live CDs (including gparted were seeing the entire drive as unpartitioned). I had to go into XP and delete the /ext4 partitions.
Is there any way for me to recover the NTFS data partition ?
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Jan 25, 2011
I installed Windows after installing Ubuntu. But Ubuntu is still intact in its partition.
I'm trying to run the Ubuntu LiveCD to recover grub, but the LiveCD no longer works. It stops the boot process and does not load completely.
I can not run Ubuntu in live mode to recover grub.
Is there any way to recover the grub/grub2 without the LiveCD?
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May 21, 2011
I been trying to figure out why after updating to the newest version of ubuntu the system didnt work anymore, but now my main concern is trying to recover files that I had on my computer, how can I do this?
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Sep 22, 2010
I'm using Ubuntu 8.04 LTS in a dual boot environment with XP. Except that I have two hard drives: One with Ubuntu and XP and one with just XP. The MBR on the XP-only drive has an entry named "Linux" which points to the grub loader for the split drive. I tried to reinstall windows on its partition on the split drive, but the install process hung and I've never figured out how to make it finish. I didn't use that partition for this entire episode. Yesterday I booted into Ubuntu and tried to log in, but immediately after entering username and password I was presented with an error message (full screen, blue background, red "ok" button). I don't remember exactly what the wordage was but it had something to do with a hard drive error.
I thought I was experiencing hard drive failure, but I hit the reset button and successfully booted into the windows-only installation. I didn't think the problem was anything more than a random error. Today I tried to boot into Ubuntu, but immediately after the splash screen I was greeted with BusyBox v1..1..3 with an (initramfs) prompt. I restarted and tried Ubuntu again and immediately I encountered the grub> prompt (no grub bootloader, no splash screen). Confused about why the prompts had changed I decided to boot into Windows, but at the welcome screen an error dialog from lsass.exe informed me of an unrecoverable error in the registry: the semi-famous "registry could not read in, write out, or flush." Next I tried the live CD.
Using the live CD I could access the contents of both of my windows partitions, but not my Ubuntu partition. Navigating to "FileSystem" using the LiveCD only yields the directories created for the LiveCD session. I tried again to boot into windows and it worked, so I'm hoping the message from lsass.exe was just a random hiccup. Right now I'm pretty much only concerned with getting the Ubuntu partition backed up, and then performing a fresh install. Content from the windows installations is fully backed up. The fact that using a LiveCD gives me access to the windows partition on the split drive makes me certain that the drive has not physically died.
Using "fdisk -l" produces no output, and "dmesg" gives some errors at the end of the output:
[310.832172] EXT3-fs: unable to read superblock
[341.900881] VFS: Can't find ext3 filesystem on dev sda5.
[887.351098] end_request: I/O error, dev fd0, sector 0
[899.495785] end_request: I/O error, dev fd0, sector 0
[899.495795] Buffer I/O error on device fd0, logical block 0
[911.636348] end_request: I/O error, dev fd0, sector 0
[911.636359] Buffer I/O error on device fd0, logical block 0
[1032.849498] end_request: I/O error, dev fd0, sector 0
[1044.999986] end_request: I/O error, dev fd0, sector 0
[1044.999996] Buffer I/O error on device fd0, logical block 0
[1057.130682] end_request: I/O error, dev fd0, sector 0
[1057.130693] Buffer I/O error on device fd0, logical block 0
[1146.185858] attempt to access beyond end of device
[1146.185872] sda2: rw=0, want=4, limit=2
[1146.185878] EXT3-fs: unable to read superblock
My attempts to use the grub> prompt to reinstall grub return an error (error 15, I think?) when I try "find /boot/grub/stage1".
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Sep 30, 2010
Recently I've been struggling with an upgrade to Karmic Koala (see my Cannot Boot from Hard Disk) from Jaunty Jackalope. Despite a valiant effort to find and install grub2 I've decided instead to download and install Lucid Linx. However when I visit the download site on ubuntu.com it gives no options as to where I might save it. Since I'm currently running Karmic from a LiveCD the filesystem doesn't have enough room for the 700mg .iso, although I have plenty of room on the 40 gig HDD. How do I point the download towards my hdd rather than the LiveCD filesystem?
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Oct 17, 2010
so I just installed Ubuntu 10.10 a couple of days ago and used my whole hard drive.Thing is, I decided that although I loved Ubuntu, I stll want to have dual-boot for some cases.. But now that the disks filesystem is not NTFS, Windows cannot regognise the disk as installable and cannot convert the filesystem. Gosh, Windows is a piece of junk, but I still need them for some occasions.
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Nov 13, 2010
Yesterday I ran an extremely dangerous command by mistake:
Acctually I intended to dump the iso to a usb disk. Soon I found the "of" is incorrect, but 1 second has passed...
Since everything happens in 1 second, only MBR and /dev/sda1 has been affected. The filesystem of sda1 is ext3.
So, can I get any luck trying to recover data from the broken partition?
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Nov 30, 2010
i got stuck while booting my LINUX box.it looks likes filesystem(EXT3) currept.recover the filesystem or the altrnative to it. I have IMP data in my machine
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Jan 23, 2011
Ext2, ext3, or ext4? I first used ext4 with Slackware, but when I tried my Puppy live CD the only partition I could mount was the Windows one. I started over and used ext2 and Puppy will mount it. I'm willing to start over and use ext 3 if it will also work with Puppy and there is an advantage to using ext3 over ext2. Puppy saw the ext4 partitions, but wouldn't mount them.
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May 4, 2010
Suppose I have a good backup of the / root filesystem. How do I recover the / root area? Suppose I have modified the root filesystem, perhaps I do an update some of the packages and regret it, and I want to get back to the system at the time of the backup. How do most linux people recover the root area of a system from a backup?
1) I wondered if I might put a System Rescue CD in and boot off it?
2) And then NFS mount the directory containing the backup? -In my case, I have made a good backup using rsync, to a directory elsewhere on the network.
3) And then, still booted off the System Rescue CD, mount the partition that contains the / root area in question?
4) Would I then clear or empty or delete the contents from the / root partition?
5) And then copy across all the files from the backup into the / root partition?
I ask these questions because of the (very nice) way linux OS is built entirely from packages... Am I being too complicated? (By comparison, I can see it is easy to recover user data.)If, instead, I simply recovered the backup straight onto the updated root filesystem, I wonder what it would look like if I then tried to verify it with "rpm -Va", for example? Surely, all the packages would fail the verification, because it would think it has a later version of each package from the update, but the actual files would have been overwritten by the earlier version from the backup?
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Jun 8, 2011
I've been using Ubuntu 10.10 on my EEE-PC for most of my thesis research, but I left it running a python script overnight and now I can't get it to login. I was running low on disk-space, and I think the problem is that the script generated a lot of text files and used up all of the available hard drive space.
Now, whenever I try to boot the machine, it reaches the user-select/login screen, but logging in just causes it to go black for a second before returning to the login screen. I have Ubuntu 11.04 on a USB, and Ubuntu Rescue Remix on another, and both allow me to boot up my machine, but I can't see my hard-drive - neither in /mnt/ nor in /media/ - in order to copy my thesis files or to delete some excess text files to free up some hard-drive space.
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Feb 7, 2010
I'm browsing on my phone which is not letting me scroll to the end of this text box so I will say thank you in advance for any replies now.After my computer was switched off abruptly after a power outage I have many errors upon booting. My hard drive setup consists of a RAID0 array of two 500GB sata disks. The partition table (from my head!) goes like this:50GB NTFS Windows XP /c/50GB ext4 Ubuntu 9.10 /4GB swapThe rest is a large NTFS partition all the way up to the end of the array at 987GB. Mounted at /media/share/I am thinking I will have to start again (I won't lose much, I have recent backups), but what is the best way of restoring the system as much as I can? Currently my computer has been booted into Ubuntu for over an hour, and after pressing ctrl+alt+shift+F2 I can see that it is finding errors still, now at sector 6008. Should I let this run its course or REISUB it and boot onto a live CD. I think the main problem is with an NTFS partition
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Jan 16, 2011
Well, my laptop slid off my couch and crashed down onto hardwood floor. The hard drive is shot. I was using grub and had both ubuntu 10.10 and windows 7 on it. Can't load either OS.
What options do I have for trying to recover data off the ubuntu partition? I tried loading livecd...for some reason, it won't work. Does livecd require a working harddisk?
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Jan 23, 2011
I deleted my hd from an ubuntu 10.10 liveCD system by trying to create a new partition table with gparted. I just wanted to restore the partition table and clicked on "create partition table"apply.Now the hole hd is an unallocated file system, so without any partitions. There had been 3 ext4 partitions.
Because I did it from an liveCD, all data should be save? Is there a way to search for partitions on the hard disk and get a new old partition table and write it to the mbr?I searched a lot already (with a very slow mobile internet connection)..
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Jan 10, 2010
When I installed Ubuntu, it created a folder called 'ubuntu' on my hard drive. Is there a way to recover my data from this folder and use it with a newer version of ubuntu. I can't access Ubuntu on my computer. It boots straight into Windows.
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Feb 22, 2010
I have a full Ubuntu 9.10x64 install on an external hard drive and I was recently asked by a friend who has a laptop running 32 bit vista if I might be able to help him in recovering anything from pictures to Quick Books files. He believes the hard drive is corrupted. His laptop is an HP with less than 2 gigs of ram, and he is not sure about the motherboard/chipset. It may or may not support x64. He went out and bought an iMac the other day so he wouldn't need to deal with not having a working computer.
Now I have 2 questions. The first being, I am wondering if my x64 install will still be able to run if I tried booting to it from his computer in the event that the chipset that does not support 64 bit architecture, or do I need to revert to a 32 bit install? My instinct/what I perceive to be the obvious answer, is that yes, my x64 install should/will be able to boot via the bios. My second question is: how do I go about loading Ubuntu once the external is plugged into the iMac?
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Feb 28, 2010
It seems my 320gb HDD has bitten the dust. The timing couldn't be more ironic as I have spent a couple of days tidying the files on it to burn them to disk.
This is an ntfs drive that had indicated 4 bad sectors but up until today (backup day) was fine. I am unable to mount it and in fact it is causing some sort of conflict with the OS drive and wont let the system boot up successfully.
I am going to try using a windows based PC tomorrow to see if I can rescue the data.
Are there any 'other' tricks to try and mount it with ubuntu that I may not have tried so far? I have tried-
mkdir /media/disk
fdisk -l to establish it's name which was /dev/sdb1 when it was all working but it isn't reachable and doesn't show in the places menu or in any of the menus when using a live CD to get round the HDD clash.
sudo mount -a used in desperation after the mkdir but nothing.
I rejigged the cabling inside the PC to make the HDD a secondary master as it was a slave on the primary IDE to start with in the hope that the system would boot up normally but to no avail.
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May 20, 2010
I inadvertently started creating a boot disk over an entire 300GB external hard drive. Needless to say, I had all sorts of data saved on there. I stopped it early on in the process by turning off the drive, but I now I don't know how to salvage what's left.
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Jul 6, 2010
I installed windows 7 over an existing xp partition and windows 7 made a 100 mb partition as some sort of windows swap space thing. This basically made my ubuntu partition unreadable, even with gparted. How to recover this data?
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Jul 22, 2010
I was editing a PHP file by FTP on my Ubuntu server, and for some reason it's saved an empty file. Is there any chance I could get the contents back? If not, I'll just have to revert to an older backup
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Dec 8, 2010
I unknowingly formatted my whole 160GB hard disk to ext4 file system from Fat while installing Ubuntu. Now my hard disk has only one ext4 partition. recover my old data.
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Mar 26, 2011
I am new to ubuntu. I was on windows 7 32 bit, computer was running slow with viruses and full hard drive so i installed ubuntu 10.10 32 bit as i believe it to be more secure. Before installing Ubuntu OS I made a backup DVD-RW data disk, it had my brothers holiday pics when he went turkey and morroco. Once I installed ubuntu I needed a DVD-RW and quick formatted the wrong disk. Is it possible to recover the data? I've read somewhere that the data is possibly can be recover.
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May 22, 2011
I deleted an old ubuntu partition, I reinstalled Ubuntu but is there any software for Ubuntu or any other Linux operating systems that can recover my data?
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Jun 14, 2011
so, after long time of succesfull use of kubuntu, i encountered a 1st major disaster yesterday while using kphotoalbum. It has somehow frozen my machine in so mighty way, that it apparently corrupted a directory with majority of my pictures , which now appears to be empty .My home lies on a separate partition, its encrypted aand using btrfs and I am using kubuntu 10.10. So, could anyone give me some clues how to unencrypt my home partition, that i could obtain an image of partition or whatever else usable for photorec to check for pictures?
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Jun 17, 2011
I have a 1Tb Western Digital Network drive. I was showing someone the photos on this on their XP computer and noticed that each file also had a capitalized version beside. I assumed this was a copying mistake and highlighted all the capitalized copies and deleted them. To my horror all files have vansihed. The next horror came in that XP apparently doesn't move deleted files to the recycle bin it just deletes them. I rapidly went back to my ubuntu machine and mounted the network drive. However none of my normal recovery file methods work on network drives. PhotoRec doesn't list the drive. and sudo ddrescue -r 3 ~/.gvfs/SFTP for [myname] on [address]/[path] ~/LOGFILE tells me permission is denied.
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Aug 26, 2010
I have a DVD-R labeled 16x that has been written by me in several sessions (but perhaps only one), always with an iso9660 fs, using a DVD writer whose data are these:
Vendor_info : 'LITE-ON '
Identifikation : 'DVDRW LH-20A1H '
Revision : 'LL0D'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
kernel 2.6.21.5, GNU (Slackware 12.0).
In spite of the last line, the drive is DVD+R compliant too. This is the only DVD drive I have and it seems unable to read that medium. Other discs, it reads them well. Before kissing the disc good bye, I would like to try all possible procedures at my disposal. The disc, by visual inspection, seems to be in a pristine condition. When I insert it, the drive remains with the led turned on for about one minute. I tried 'cdrecord -setdropts driveropts=singlesession dev=x,x,x' to switch the drive to single session mode but with no results. I have many tools in the cdrtools package:
cdrtools:
FILE LIST:
./
usr/
usr/bin/
usr/bin/skel
usr/bin/mkzftree
usr/bin/devdump
usr/bin/scgcheck
usr/bin/mkisofs
usr/bin/btcflash
usr/bin/isovfy
usr/bin/readcd
usr/bin/isodebug
usr/bin/cdda2wav
usr/bin/cdrecord
usr/bin/isodump
usr/bin/isoinfo
I also have dvd+rw-tools.
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Jul 28, 2010
I tried to recover deleted data using testdisk tool and now my partition table have some errors. Even though i have 3 partitions and 1 unallocated disk fdisk -l shows only 1 partition
Code:
vishnu@vishnu-laptop:~$ sudo fdisk -l
[sudo] password for vishnu:
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x68000000
[Code]...
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