Fedora :: Recover Data From EXT2 Device (Card Or Image)
Dec 25, 2009
I was testing a bug in F12+Acer Aspire One and its 'suspend' feature (you can probably find the thread) and I ended with my SDHC card messed up. I formatted it as ext2 (or ext3, don't remember exactly) and apparently its superblock got corrupted. For one thing there is a single file I want to recover from the card (I don't mind formatting it afterwards). I am no expert using e2fsck or fsck, that's why I am asking here. In addition I used the "dd" command to create a backup of the drive in a file (so I can start tinkering with it). What is the best course of action to recover my files? Either from the card or from the image?
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Aug 20, 2009
In a nutshell, our RAID 1 array was rendered broken and we were advised that core lib files were missing and the OS needed to be reloaded... a quote from our server host:"The OS is not healthy.This server will need a reinstall.
Libs are missing." This was after having replaced what we though was a faulty /dev/sdb. So they reloaded the OS (Debian 5.0.2 x86_64) on 2 FRESH drives, and installed the old /dev/sda as /dev/sdc once the reload was completed. Here's the output of /etc/fstab on the fresh install so we know what we're working with:
Code:
debian:/BAK# cat /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
[code]....
The one problem I see myself running into is /dev/md1 and /dev/md2 are currently in use by the new system, so I cannot mount it there. I should also note, reloading the OS is a viable option if needed as we haven't started configuring the server yet. So if we need to reinstall the OS and assign the NEW RAID arrays to something other than /dev/md1 and /dev/md2 then we can do that.
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Jul 1, 2010
I am student of MCS and working on final project. I am the user of windows xp. I am new in Linux. I am working on a project that titles "Hard disk data Recovery of ext2 and ext3 in linux". In windows, including dos.h and bios.h header files in program of c language I can send interrupt to bios and access most of the devices like parallel port, hard disks etc. But problem is that there is no bios.h and dos.h files in gcc. Now how can I access my hard drive using c program. How can I call int13h interrupt in linux or there is any other function in the linux to access the hard disk. In fact I want to access sectors of my hard disk using c language program. How can I do it?
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May 3, 2010
I was installing windows vista on my computer, so I backed up everything to a external drive which was formatted with ext2. I then proceeded to install windows vista. When I got to the partition section I tried installing windows vista to my raid 0. When it didn't work I decided that I would delete all my existing partitions and create a new one. Well in my haste I accidentally deleted my ext2 partition from my backup drive that was still connected. As soon as I realized what I had done I shutdown the windows install and disconnected my external drive. This is the current state of my drive from parted:
Model: WD 15EADS External (scsi)
Disk /dev/sdb: 1500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number Start End Size Type File system Flags
I know that the drive only had one partition before and that it took up the entire disk and it was ext2 (maybe ext3).
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Jan 6, 2011
Because a customer of mine is inefficient in doing backups I have to do a recovery if possible. Drive had vista on it and was really bug infested to point of a reload. I reloaded vista from scratch and then my customer says "Oh, I guess I forgot to back those files up...".Is it possible to recover some files even though vista was reloaded? I suppose the basic answer is "As long as they havent been overwritten yet".
Im running testdisk and its made a ton of directories with files in them that I assume it has recovered. Im going to have to write a script I guess to grab the files as there are about 600 directories!I guess what Im asking is 1. What are my chances of success? 2. Has anyone ever recovered files from a vista re-install? 3. Is testdisk the best way of going about it (with photorec).
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Aug 19, 2010
I have a laptop with Fedora 12 on it and I accidentally did an dd if=/dev/zero of=/dev/sda (since then I learned to think before I type)
anyway, I stopped it in time (I hope), it only zeroed first 60 MB. So, it killed partition table and boot partition. What I need is home partition, and it should be untouched. home is on a LVM device (fedora default install settings), and I tried testdisk (supposedly handles LVM) but it found only one partition (I guess it's a LVM physical device, as there should be 3 partitions, /, /home and swap) and said it's not recoverable.
Is there a way to get access to files on that partition (partition itself, including file table should be untouched). Partition contains various data (video, audio, and text) I need back (and it's my data, not backed up, and not something I can redownload). Is there any software that can help me with this, and if not, is it theoretically doable (I believe it should be, as the partition itself is not damaged, so it should be possible to read file names and link them with data on disk, am I right)? what is a good way to image the disk, so I can reinstall the laptop while trying to rescue data from image?
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Jun 26, 2010
Using F12 with a LVM Volume, Single disk with OS on and boot partition. The OS HDD is getting i/o errors, but will still boot to the login screen. I've removed the HDD and connected it to a Fedora Live OS on my laptop, connected the HDD and it registers as :
[root@localhost]# fdisk -l /dev/sdd
Disk /dev/sdd: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000e0069
Device Boot Start End Blocks Id System
/dev/sdd1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sdd2 26 30401 243991201 8e Linux LVM
And it tried to mount /dev/sdd2 to view and see if I can recover some files.
[root@localhost]# mount /dev/sdd2 /mnt -t ext4[root@localhost james]# mount /dev/sdd2 /mnt -t ext4
mount: wrong fs type, bad option, bad superblock on /dev/sdd2,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
Any way to mount the partition to allow me to try and get some data back, or if trying to do a full backup of the drive you can get it to ignore i/o errors.
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Oct 30, 2009
I have 3 drives in my computer. I installed Fedora 11 on my two biggest one, with the LVM treating them as one single drive. I attempted to install XP on my last drive. As I was installing, I selected my third drive (I'm 100% sure it is the correct drive as it is an 80gb whilst the others are 120 and 200 respectively) and told it to delete the partition on that drive and format. After I did that, it started to format, starting with my 120! I'm fairly sure that it was merely a quick format, as it only took 5-10 seconds for it to format, and that my data is still there. Is there any way to recover my "lost" data, or did I just really screw myself over?
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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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Jan 5, 2011
My sister-in-law (SIL) has a Western Digital ShareSpace 4TB network access storage that was setup in a RAID 5 configuration (four 1TB hard drives). To make a long story short, a blinking red light on the device and a call to Tier 2 technical support, one of the guys mentioned using Fedora as a way to retrieve the data from the hard drives (seems like the hard drives are good but maybe the actual NAS device crapped out).
I will not have access to the hard drives till this weekend and of course Tier 2 technical support is closed on the weekends. I have almost no Linux knowledge but can follow instructions pretty darn well. I am looking to install Fedora 14 Desktop Edition 64 bit on my desktop sometime tonight or tomorrow. Once I have Fedora installed, how would I mount the hard drives and have Fedora read the RAID 5 array?
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Apr 22, 2011
We are running debian off of an SD card and want to know what's best for /var?
- Plenty of room on 2GB SD card, so do we, make /var as large as possible (everything else is read only) to reduce block overwrites, or do we make /var as small as possible, hopefully reducing the load 'pdflush' places on the 200 Mhz system?
That said, why not ext2? Is there damage that can happen in /var due to insta-crash or power loss that will prevent proper system function? We heard ext4 is more optimized, but ext4 on 2.6.29, not sure.
If we must use a journaled file system for /var, then which is lowest load on system, or "better": jfs, ext3, jffs2 ...
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Mar 18, 2011
I have a Linux application(ProMAX 5000) running in a virtual Machine on my windows OS. I am using an external Hard drive of 250G in ext2 file system as my device for large data read, write & execute file system. I have already mounted the device from /etc/fstab. But i want my application to access this device as a Primary data storage device OR Secondary storage device. What command will i invoke to partition this 250G drive as my primary or secondary storage device.
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Mar 17, 2010
How to Configure BSNL EV-DO Data Card in Fedora 11 :
1. Click on Application.
2. Go to System Tools
3. Go to Terminal
[code]....
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Dec 6, 2010
How to connect bsnl 3g data card in fedora14. i tried with mobile broadband connection but it is not working
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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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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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Sep 29, 2010
I have tried putting the SDHC card in before switching on laptop, after, unmounting and remounting several times... on the odd occasion (1/10?) it reads fine, but more often than not, i can see thumbnails of all the images but on opening the file it comes out wrong...either most of the image is a grey block - so can see a tiny bit of sky then its as if it hasn't rendered the whole image...or, the image is striped horizontally, with as if a film negative has been shredded and then misaligned with the colours going wrong...is there an update, something to install to fix this? ETA: - its not the card which works perfect on other laptops and its not the card reader it opens fine in windows 7 on the same computer.
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Mar 16, 2010
How to Configure BSNL EV-DO Data Card in Fedora 11 :
1. Click on Application.
2. Go to System Tools
3. Go to Terminal [tanmoy@localhost ~]$
4. Type su -l and enter
5. You have to Type your Password as a super user.
[tanmoy@localhost ~]$ su -l
Password:
[root@localhost ~]#
6. Plug in the USB DATA CARD.
7. Write lsusb and press enter for acknowledgement of detecting the USB device.
[root@localhost ~]# lsusb
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
[code]....
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Feb 3, 2011
I purchased a new Desktop PC and MTS MBLAZE data card. It works in Windows XP OS. To make it work in Fedora GNOME OS how can I proceed? Which software do I need? Where do I get it and how to download and instal it in my PC? The firm selling the data card do not have an easy solution.
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Jan 19, 2011
Possible Duplicate:Recover a file deleted using rm command in Linux.I have accidentally deleted all the stuff under my home directory, say /home/OriginalWood, is it possible to recover?Now the home directory is empty and not yet overlapped by any data. So, is there a way to recover?
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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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Apr 23, 2009
My friend has a DELL DIMENSION 9150 computer with 2 harddisk (250 GB each) in RAID 0 (fake raid) with Windows XP installed. There are a lot of documents and pictures installed - and no backup ever done! I have found some pages regarding recovery data from RAID 0 () but My friend have bought 2 new harddisks(WESTERN DIGITAL 2500AAJS) which is almost the same as the ones inside.
My plan:
1. copy each harddisk
2. replace original HDDs with my copies
3. try to recover
4. change RAID 0 to normal HDD in BIOS
5. reinstall Windows XP
I have some LINUX distros (DSL, SystemRescCD, UltimateBootCD on Live-CD and UBUNTU installed on one other computer) which I can use. I read about "dmraid" and then try to mounting the RAID in a UBUNTU live-CD version...
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Aug 27, 2009
Well i have an 20GB HDD (/dev/sdb) formated with ext4 and has very important files on it .All of sudden something went wrong and the 20GB partition has been lost . Now how do i have to recover that partition and primarily recover those files . Gparted shows no partition on it but unpartitioned space .
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Apr 16, 2010
I wanted to get some data off a second disk, let me tell you what I did. (that didn't work). The data I am looking for is under /etc/ on the second disk. I looked in /dev for /dev/hda or hdb but there was nothing.
I found:
/dev/sda
/dev/sda1
/dev/sda2
/dev/sdb
/dev/sdb1
/dev/sdb2
So I guessed /dev/sdb /dev/sdb1 /dev/sdb2 was the second disk. So I did:
mkdir /tmp/olddisksdb
mkdir /tmp/olddisksdb1
mkdir /tmp/olddisksdb2
Then I did
mount /dev/sdb /tmp/olddisksdb and got mount: you must specify the filesystem type
mount /dev/sdb1 /tmp/olddisksdb1 and got no feedback (good?)
mount /dev/sdb2 /tmp/olddisksdb2 and got mount: you must specify the filesystem type
If I do:
ls /tmp/olddisksdb - I get nothing.
ls /tmp/olddisksdb2 - I get nothing
ls /tmp/olddisksdb1 - I get:
config-2.6.18-128.el5 symvers-2.6.18-128.el5.gz
config-2.6.18-164.9.1.el5 symvers-2.6.18-164.9.1.el5.gz
grub System.map-2.6.18-128.el5
initrd-2.6.18-128.el5.img System.map-2.6.18-164.9.1.el5
initrd-2.6.18-164.9.1.el5.img vmlinuz-2.6.18-128.el5
lost+found vmlinuz-2.6.18-164.9.1.el5
message
This is a CentOS box.
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Jul 12, 2011
During a new installation of openSuse 11.2, because of a mistake, I lost access to previous partitions.
I was advised to use testdisk/testimage, but of course it didn't work, because my lost data had beeen encrypted.
How can I make linux ask me the previous root password?
I think any program that doesn't ask the previous password, isn't able to recover data. Is it true?
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Apr 27, 2010
I bought an IcyBox NAS a little while back, and it recently died on me. I have physical access to the disks inside (1.5TB RAID 1 array), and the box was running a version of Linux. I now have the difficulty of retrieving the data from the disks. As best I can tell, the NAS uses software RAID. All I have available are 2 Windows machines, one of which has sufficient free space to hold the data from the NAS. I've booted one of the Windows machines into Linux using a Ubuntu CD, and Ubuntu can see the array drive(s), but cannot mount them.
What would be the quickest and easiest way to retrieve the data from the disks? What data can I collect from Ubuntu (10.10) that will help me pin down why it can't mount the array volume?
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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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