Hardware :: Recover Data From RAID 0 From Win XP?
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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Oct 17, 2010
I was using a Buffalo LinkStation Duo to store pictures and the OS in the unit failed. As far as I know, the data on the two 1 TB drives is fine, and since Buffalo uses a Linux kernel in their LinkStation and the format is xfs, it should be possible to get the data off if I can mount one of the drives on a Linux box. I've put one of the drives into an external USB enclosure and attached it to my Linux system, but I cannot get the drive to mount, probably because it is one element of a Raid 1 array.
Most of what I can find on the Web concerns setting up a new Raid array, not creating an array around a drive that already contains data. I have installed mdadm, and I'm running Mint Linux release 9 (Isadora) on an Intel box. When I run mdadm -D /dev/sdb or sdb6, the device and the partition where the data is located, it reports that the device does not appear to be an md device. I'm not sure what that means. Any help would be greatly appreciated, as I've got around 13,000 photos on these disks that have no backup (I figured what could go wrong with mirrored copies?).
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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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Jan 12, 2010
I have 8.04 running mdadm raid 1. I selected the wrong drive in gparted and managed to hose my partition tables.
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Jan 20, 2011
The situation: computer based on Asus P6T motherboard. Two RAIDS:
- 'boot', on motherboard built-in RAID controller (CentOS 5.5 installed on this RAID)
- 'data' on 3dware RAID card
At one moment a CPU fan fails and the system halts. After the fan is replaced, BIOS informs it's reset and all the inner controller data are forgotten. After I switch it to 'RAID' mode, it remembers it was a mirror raid (RAID 1) installed, but the file system on it is completely trashed.
The 'data' RAID run by external controller isn't affected by the system failure. Three questions:
- is it worth trying to install OS on the rebuilt 'boot' RAID once again? Looks like if BIOS settings are lost for some reason, there's chance of completely losing RAID data
- has someone encountered similar problem with built-in RAID nd was it possible to recover data?
- will the software RAID be worth creating instead of using hardware RAID to replace the 'boot' drive?
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Jul 18, 2009
how can I create RAID 1+0 using two drives (one is with data and second one is new). Is it possible to synchronize data drive with empty drive and create RAID 1+0 ?
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Jul 27, 2011
Right now I have a 320GB system drive and 3TB data drive. I want to add two more 3TB drives and do a software RAID5 3x3TB. Is that possible without losing the data that is already on the data drive?Just want to make sure before I bought the 2 two drives. Not looking for instructions on how to do it,but if you want to include some that would be great too Just making sure it will work.
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May 24, 2010
I recently installed Fedora 12 on a system with 3 HDs, using the first hard drive for root and swap, and the other two as a RAID 1 device mounted to the folder /data. This was all set up while installing from CD. /data appeared as a folder under Filesystem in the GUI
After trashing the OS, I reinstalled from CD. I formatted only sda to recreate the OS; sdb1, sdc1, and RAID MD0 were not changed during the reinstall. When the newly built system is started up, RAID MD0 does not appear when I run fdisk -l. It does show up in the GUI when I open "Computer" as RAID-1 Drive. When I open it and authenticate as root, it then appears as RAID-1 Drive 320 GB Filesystem. I can open that and authenticate as root again to access the files that were on the initial RAID 1 device when I reinstalled. At this point MD0 is listed when fdisk -l is run, with the message "Disk /dev/md0 doesn't contain a valid partition table"I am able to mount the opened RAID-1 device to a folder, but each time I reboot the system I have to open and authenticate the RAID device twice to access the files in it. Is there a way to configure the OS to recognize this RAID 1 device as it did before I reinstalled? My goal is to recreate the RAID device without having to move the files on it to another drive.
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Jan 27, 2010
I had a raid 5 + lvm 2 array and lost a disk. While it was recovering the array, the power was down and recovery stopped. When I recovered the power and start the machine the array was unable to start, it was degraded and the states were different between disks. Every disk watched the array in a different way. I put you the states:
Quote:
/dev/sdd1
Number Major Minor RaidDevice State
this 0 8 33 0 active sync /dev/sdc1
[code]....
The first part in /dev/sdc1 is the same for all the devices, I just post you the states. Another thing is tha all the devices say that there is no superblock It seems that 3 disks are "active sync" but the states of the others doesn't match between them. And /dev/sdd1 is spare, the disk I added manually at first to start the recovery process.
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Aug 21, 2010
I HAD a fedora 11 server with md RAID 1 across two 1TB SATA drives. The md0 space was set up to be an LVM PV and the single LVM VG was carved up into 5 or 6 LVs. The MB on this system died and I wound up buying a new one.
Now I want to recover the data from the RAID1 setup on the new server. However, when I attach the two 1TB drives to a new fedora 13 setup, mdadm is only able to find one of the two drives. The partition on the second drive shows "busy" during an mdadm -A -s -v to scan for md volumes.
Well, one drive should be enough since this is RAID1, right? Well, when I do a pvscan -v, the other drive shows up as a "NEW" pv not allocated to a VG. In addition, vgscan does print "Invalid metadata header checksum" when it runs but it doesn't point at any particular PV. I'm afraid to go any further with LVM since I can't afford to lose the data on this system. It is backed up offsite, but the restore will take several days and I can't afford to be down that long.
Are there any tools or techniques where I can dig deeper into what each drive, in the RAID1 pair, has right and wrong with it and pick one that I can force into a usable VG so that I can recover the data?
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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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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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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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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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Jun 7, 2011
I recently upgraded a server from Fedora 6 to Fedora 14. In addition to the main hard drive where the OS is installed, I have 3 1TB hard drives configured for RAID5 (via software). After the upgrade, I noticed one of the hard drives had been removed from the raid array. I tried to add it back with mdadm --add, but it just put it in as a spare. I figured I'd get back to it later.Then, when performing a reboot, the system could not mount the raid array at all. I removed it from the fstab so I could boot the system, and now I'm trying to get the raid array back up.
I ran the following:mdadm --create /dev/md0 --assume-clean --level=5 --chunk=64 --raid-devices=3 missing /dev/sdc1 /dev/sdd1I know my chunk size is 64k, and "missing" is for the drive that got kicked out of the array (/dev/sdb1).That seemed to work, and mdadm reports that the array is running "clean, degraded" with the missing drive.However, I can't mount the raid array. When I try:mount -t ext3 /dev/md0 /mnt/fooI get:
mount: wrong fs type, bad option, bad superblock on /dev/md0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
[code]....
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May 31, 2010
I have a MSI Board that had this hard drive configuration.
200GB x Single EXT4 Ubuntu
320GB x Raid Mirror NTFS
320GB x Raid Mirror NTFS
[code]....
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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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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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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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