General :: Recovering Data From A Severely Damaged Ext3 Partition?
Feb 21, 2011
following problem. A friend phoned me in despair. Her Ubuntu didn't start any more - ASUS-Laptop switched on stops at a ramfs-prompt.
I started Puppy-Linux from DVD-Drive. Worked fine. But puppy can't mount her /dev/sda1 partition either. At least you can see that the partition is still there. Fsck stops with an error. May be the initial problem is a sort of bad hardware by which bad bytes were written to the hard drive. Hard drive and/or memory could be replaced but not the data.
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Jan 10, 2010
I have an external 3.5" USB 250Gb HDD which is showing symptoms of hardware problems (repeated /var/log/messages errors of "reset high speed USB device using ehci_hcd"). This was originally plugged in to my NSLU2 running Debian Etch. I have just installed Ubuntu Desktop 9.10 to a spare Pentium-3M laptop and was hoping to copy the contents of this HDD to a fresh drive. However, I cannot mount it even read-only; mount -o ro /dev/sde3 /mnt/disk fails, and the /var/log/messages error is "recovery required on readonly filesystem", "write access unavailable, cannot proceed". I cannot understand why mounting a disk read-only should require write access. Following advice I googled elsewhere, I tried running mke2fs -n /dev/sde3 to try to list the alternative superblocks - but once again I got the error that the device was read-only. How can I go about accessing the data on this disk?
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Jan 15, 2011
I am in the process of recovering data from some damaged hard drives.
I am copying the data to a recovery folder on the safe system disk where it is being sorted.
Some of the data/files I do not want to keep.
I want to delete them.
However the permissions are such that it will not let me.
I need to be root.
I don't really want to flaff about in the 1980's geek terminal environment ... just want to right click and select delete.
Is there any way within the GUI to be as one with Root, all powerful, all seeing ......
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May 8, 2010
I've tried to resize my home partition using parted. Prior to it I had removed ext3 flags following some advices found on net. Resizing failed and I ended up with filesystem bigger than partition. Then I managed to enlarge the partition using fdisk but it didn't help. When I run fsck on it it prints:
Code:
fsck from util-linux-ng 2.16.2
e2fsck 1.41.9 (22-Aug-2009)
[code]....
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May 20, 2011
I Tarred and GZipped most of the data on one 1Tb partition and stuck the archives on a second 1Tb partition on a separate disk. I then proceeded to format the first partition with NTFS (from Linux.) The only problem is that I completely forgot that I had a CD drive and formatted sdc1 instead of sdd1! I began doing a full NTFS format and after a minute or two I cancelled it and decided to do a quick format. I then realized my mistake. I managed to find a copy of the superblock and began trying to recover the disk. fsck -t ext3 recognized the partition as NTFS but I luckily didn't have fsck.ntfs installed so it didn't touch it. I managed to get it working with fsck.ext3 (with -b,-B and -y) fsck.ext3 didn't mind that it was an NTFS partition.
Roughly how long will this take? It's running from Knoppix within a virtual machine to a USB hard drive which is 100% full. Days? Being that for a few minutes I attempted a full format am I going to end up with a bunch of corrupted archives? If I do end up with file corruption can anyone recommend a way of recovering the data / sorting it out? Is it likely to be just a few old files that are corrupt (It's my understanding that filesystems like to keep files in the same area on the disk to minimize the amount of head travel.) This might just be wishful thinking but as the filesystem fills up will ext3 put the newer files towards the end of the disk? If so then I'm hoping that a full NTFS format starts at the beginning of the disk.
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Dec 30, 2009
A HP Netserver LP2000r, with original SCSI controller and HP NetRaid-2M controller, 3x 36GB Ultra3 HDD in RAID5, Debian (sarge/etch), has crashed after 992 days without reboot. From all that I can see, a hardware failure, most likely with the memory. The HP Diagnostic tools cannot find any problem, but everytime I boot into Knoppix, I get between 2minutes and 2 hours of runtime, and then either a kernel oops or just a complete and sudden halt.
Well, the box has earned its money. However, there is some data on the drives that I need to recover (yes, I have beaten myself up properly about not backing up that data, don't even go there !). There are three partitions: sda1 is /, sda2 is swap and sda3 is a LVM volume with 3 logical volumes on it. As far as I can tell, the hardware defect must have been creeping in and has made a total mess of the inodes in all these partitions.
After booting into Knoppix, I can restore the volumes using pvscan, vgscan, lvscan, vgcfgrestore and vgchange. If I try and mount them: mayhem. So I try and check them, using fsck.ext3. All sorts of interesting nonsense, such as a completely empty inode 11 (the first inode) and then obviously from there on all else is pointless. I tried using debugfs, but the information on what to do with it is somewhat spurious.
P.S.: Tomorrow I will go and get myself a 16GB Flash Drive and then hopefully I will be able to dump the partitions one by one onto that drive and transfer the images onto a different computer for analysis and data recovery.
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Aug 5, 2011
These following ext3 partitions contain identical data. As we can see, the larger the partition size, the more space is required for the same files:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/loop11 3965777 561064 3199964 15% [...]
/dev/loop19 573029 543843 29186 95% [...]
[code]....
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Oct 11, 2010
I am facing a serious problem.I installed UBUNTU 10.04 and encrypted it during installation. I accidentally erased some of the necessary files from root folder. now the the OS is NOT booting.luckily i still have the encryption key i have some important documents in that drive (desktop folder).
PS: I have tried to run Live Ubuntu it shows the Root, but it does not enter any of the folder.
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Dec 11, 2009
I usually repartition a disk by backing up, deleting the partitions, formatting them and repartition. I just did a 200 gig backup (so i am safe) and i want to join 2 (ext3) partition together, sdb1 (data4) and sdb5 (data5) into one big partition. Is there a way to do it without scraping the data in sdb5 (data5). It would save me from rewriting the data back to that new partition (200 gig is time consuming).
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May 16, 2010
I was trying to delete a logical drive in windows xp and the damn disk management tool in windows not only deleted my other windows partition but also my linux /data ext3 partition. Now I have a unallocated space in place of these partitions. The data is still there but the entries in the partition table have been removed. So how do I recover my partition. I was trying to use the following tutorial. [URK]
I used the sudo parted /dev/sda -- and then rescue START END command and could get back the /data partition. But it gives me the following error while mounting the partition. mount: wrong fs type, bad option, bad superblock on /dev/sda7, missing codepage or helper program or other error. In some cases useful info is found in syslog - try dmesg | tail or so.
What does this mean. How to I fix this? Also when I try to recover my windows partition using parted it scans for a while and then does nothing. It doesnot ask for writing the lost partition in the partition table. What do I do?
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Dec 19, 2010
I just installed kubuntu 10.10, replacing an older installation. I have three hard drives one of which had all of the data I wanted to save, about 500gb. I repartitioned and formatted the other two drives and made sure that the data drive would be mounted but not formatted. When I booted into my new installation, the data drive was blank. I'm not sure if it's relevant, but I had just upgraded the file system from ext2 to ext4 before starting the installation.
I've been trying to recover my lost partition with testdisk. The website has instructions for recovering a formatted partition. It looks like it's working until the instructions tell me to choose Boot and RebuildBS, which I don't see as options. Can anyone give me any advice on how to recover? How did this even happen? Has anyone had a similar issue with installation?
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Jul 20, 2011
I recently suffered a hard disk failure, meaning I had to replace the faulty device. After attempting to mount the old faulty hard drive using and external caddy, I got the following message... Unable to mount 144 GB Filesystem Error mounting: mount: wrong fs type, bad option, bad superblock on /dev/sdb5, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so
I'd like to attempt to recover what I can from my /home directory but unfortunately I use encryption (although I do actually know my pass phrase). What procedures and software can I use to try and recover data from this drive?
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Jan 18, 2010
I have an external USB hard drive that I need to recover some data from, but I see from fdisk -l that the partition uses LVM:
Code:
[root@localhost ~]# fdisk -l /dev/sdd
Disk /dev/sdd: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
[code]....
I've followed various lvm tutorials all of which describe setting up lvm from fresh on empty disks. Unfortunately non mention how to 'install' new a drive that was previously set up with lvm. I have had a go anyway and may have now lost my data. Here's what I've ended up with (the partition in question is sdd1):
Code:
[root@localhost ~]# pvdisplay
--- Physical volume ---
PV Name /dev/sdd1
VG Name vg02
[code]....
I've tried mounting with other fstypes, but all give the same error.
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Feb 25, 2010
I have recently recovered from an HDD failure on my Drobo. One of the disks died and corrupted the entire array (which is not supposed to happen). I have since managed to copy the data off onto smaller disks and after replacing the failed drive, have copied everything back.
Now that im up and running again, i was wondering how this situation would play out on encrypted disks, or in the case of a drobo a large encrypted partition (as you cannot encrypt the entire array).
Would i still be able to recover the data if i were to encrypt it? It is a 4.2TB array, and i assume that I would need to copy the data in its entirety to recover it, so using multiple smaller disks would be out of the question right?
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Jun 6, 2011
I have an Ubuntu server virtual machine running in vmware server on a Win2003 server host. A locked up machine forced a hard reset a couple of days ago and my VM seems to be damaged.At first VMware wouldn't start the VM, complaining of a locked file. I deleted 3 .lckdirectories and was able to start up the VM. I then get a GRUB menu with 6 options - booting any of them other than memtest results in a lone underscore cursor at the upper left corner.me in the right direction as far as the next thing I should try at this point? Unfortunately I had not yet set up a rigorous backup scheme, other than internal daily db/web backups that are stored inside the VM. I have a snapshot from 3 weeks ago but upon loading the snapshot I get the same cursor.
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May 26, 2010
because what i was looking for was complicated, i am going to edit post
I have laptop with ubuntu on it. I have one ext3 partition with ~220GB.
I want to delete ubuntu and create two ntfs partitions (50+170GB) so i can install windows 7 later.
how to do that using GParted Live CD?
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Apr 25, 2009
I wanted to upgrade from Intrepid to Jaunty. I opted for a format/reinstall as I figured upgrading usually sucks. To save my important data, I resized my partition (partition A), formatted the empty space with ext3 (now partition B), and moved the necessary files from partition A to partition B. Then I went through the install process and installed Jaunty on partition A, telling the installer to NOT format partition B. It gave a warning about the installer deleting system folders (var, usr, etc) but I figured it didn't apply. I was wrong.
So now partition B is "empty." I know it didn't format it, but I need to get those files off of there. I have created an image of partition B using ddrescue, but I don't know where to go from there. I tried using foremost, but it won't recover things like my virtual machines and completely nukes the original file structure I had. And I've tried mounting it (using sudo mount -t ext3 -o loop /home/user/recovery.img /mnt), but that doesn't seem to work. The mount command completes successfully, but nothing shows up in the folder I mounted it to.
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Jan 26, 2011
By mistake I formatted an ext3 partition on my external hard-drive. Now it has turned into a vfat filesystem. Is their any chance of recovering the lost data?
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Mar 4, 2010
I have installed fedora 11 in my system. While installing it asked me encrypted password which i passed. But I forgot that. Now the problem is whenever i boot my system before going to root itself it is asking for volume encrypted password, which as i told you i have forgot. Now i am not able to access my hard disk since it is completely locked. Is there any way to decrypt the password or unlock it. Or if that is not possible can data be recovered,which is my primary requirement..
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Jan 18, 2010
I reinstalled ubuntu linux and lost some mySQL database files that were located in the /var/lib/mysql/ folder. I need to recover them ASAP. How do i go about it. Is it possible to recover .frm, .myb files using scalpel. Is there an alternate software I could use?
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Jun 3, 2010
Ubuntu 9.10 64bit. Acer Laptop
Using ubuntu 9.10 cd to access laptops hard drive.
foun readme file in /media/disk/mark
opened with openoffice. THIS DIRECTORY HAS BEEN UNMOUNTED TO PROTECT YOUR DATA.
From the graphical desktop, click on: "Access Your Private Data"
or
From the command line, run: $ ecryptfs-mount-private
So I tried a couple of ways...
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Apr 16, 2010
I have 6 disks (partitions) combined into one lvm volgroup in my server. The server have been online for a year.
And today, suddenly it hangs. At first, I thought it's caused by network lag, because after a couple minutes the server is responsive again. But then I felt something very wrong. I can't access any file that stored on the lvm.
After some dmesg, fdisk -l and a peek at /etc/lvm/archive/*, I found that one of the partitions used for lvm volgroup is missing. Tried a reboot, and the suspected disk is undetected even in BIOS. Must be caused by bad block on the disk's sector zero or something. I think missing one pv makes the volgroup failed to initiate. So, no volgroup, no logical volume. And I can't access the files on it for sure.
Is there a way I can save/rescue data from other non-damaged disks? I have no luck finding similar situation (and solution) by searching on google.
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Jun 29, 2010
I needed to install a new OS on a new HD but i also need the data on the old HD which has some problems (it doesn't boot anymore). The problem is that in the old one i had linux (Slackware) and so it doesn't allow me to view the content of the folder /home/myself. If there was something possible to do to recover all the data or if it will be forever lost.
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Jul 4, 2011
My laptop was damaged a couple of months ago. Just a short drop from the couch, but it was hard enough to make the HD inaccessible. I took it to a local, respected shop but they couldn't save any of the data and simply installed a new HD after consulting me.
I have the old drive and would still like to retrieve the data, if the price is right. What should I ask about when looking for another repair shop?
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Jan 16, 2011
Yesterday, my windows xp died and I can not do anything with that, but I would like to rescue my important files from hdd before format. I open ubuntu trial version from cd but i can not access my hdd. I find my hdd in system->administration->disk utility but I can not go anywhere from there.
When I solve this problem I would like to try ubuntu as my os but i am worried that some programs may not work on it . Like for example my bamboo tablet, fm2010, adobe ilustrator, autocad.
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Jun 20, 2009
I have accidentally removed vmware virtual disk, my host operating system is RHEL5.2 with ext3 file system, i have used photorec, magicresue and foremost but still no luck to recover the vmdk file. i have seen in foremost configuration file that there are some predefined files (ex- doc, pdf, jpg, avi, zip, etc),
1. is there any way to add vmdk file extension on that configuration file?
2. if yes how can i do ?
3. by adding vmdk on configuration file, can i specifically use recover option for vmdk?
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May 6, 2011
I didn't know a resize operation on a 750 GB disk was going to take 40+ hours, and I was biting my nails the whole time, until the power went out when "only" 8 hours where left.I can still mount the partition, and many of the files are still there, but some files show as '? ? ? ? ? filename.ext' with ls -l.If I try to go inside such a directory: Input/output error.
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Apr 25, 2010
I was trying to install Debian 5.04 on a Mac G4, and in typical geek tradition, I didn't RTFM. During installation, I nuked all existing partitions, creating new to my liking. But as I learned later during the installation process, yaboot needed a NewWorld partition, so I can't boot the installation. I don't have any OSX CDs with me (this is a used G4 I purchased of craigslist) with which to create a HFS partition.I've re-run the Debian installer, which lets me create a partition that is supposed to be of type 'NewWorld', but the installer does not seem to like it or recognizes it.
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Jan 28, 2010
I just ruined my /ntfs partition. I used the mkfs command and stopped it by ^C immidiately, but it was too late. mkfs.ext4 /dev/sdb1
Is there a way to recover NTFS partition now ? The partition </dev/sdb1> was 'ntfs' and mkfs.ext4 did not check if it was a ext4 or give any pre-check warning, just went ahead with making the ext4 fs on a ntfs partition.
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Dec 8, 2010
I have a HDD with OS Win with three partitions NTFS.I installed Ubuntu 10.10 on new partition, and I left the old partitions on the disk, because there are a lot of my personal data.When I was looking for how to mount partitions on startup, I was fortuitously to Palimpsest Disk Utility selecting the checkbox on sda2 as a boot, and apply. But I saw that it was wrong and took the check back. And after this was damaged NTFS on the partition sda2. Windows shows the partition as RAW.
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