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  1. #1

    Recover a corrupt HD

    Let's say I were to have run "dd if=/dev/zero of=/dev/sda2 bs=512k" for a few seconds and overwrote 2GB of a 250GB drive.

    With the drive connected as a slave to another server, is there anything I can do to get data off the 248GB that wasn't overwritten now that the filesystem is messed up?

    Without sending it to a recovery company?
    Last edited by Dan Grossman; 07-03-2009 at 07:57 AM.
    Dan Grossman - dan @ awio.com
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  2. #2
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    Normally the /dev/zero will fill the partition with zeroes and would wipe out the data. If you start the process it would not be able to mount the partition again. Did you try to mount the partition?
    David | www.cliffsupport.com
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  3. #3
    It's definitely not mountable, and testdisk couldn't recover the partitions

    I'm using e2fsck with a later superblock to see if anything is recoverable

    But chances are it's all lost, or will be after I'm done mucking it up more with e2fsk

    Not worth the cost for a recovery service on this data
    Dan Grossman - dan @ awio.com
    My Blog | Affiliate Program for Web Hosts

  4. #4
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  5. #5
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    I remember i did such on Windows server many years ago and be able restore most of data with super best tool "Tiramitzu". About few week ago customer accidentally format his disk and I was need find soltion again but for Linux O/S. Likely, customer have a backups so we just restore his data from backups but when i search internet i found interesting tool: http://www.data-recovery-software.ne...Recovery.shtml
    You can try at least.
    Rustelekom LLC Dedicated server since 2002, RIPE NCC member, LIR, AS51168

  6. #6
    I was able to fix the file system enough with some e2fsck'ing to get the data off it. Wasn't anything terribly valuable anyway
    Dan Grossman - dan @ awio.com
    My Blog | Affiliate Program for Web Hosts

  7. #7
    Is there a backup before? if there is, just restore it. Some good tool can be used, such as todo backup, genie back up

  8. #8
    Join Date
    Jul 2009
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    you can try testdisk

    http://www.cgsecurity.org/wiki/TestDisk

    it will look for superblocks and may possibly restore the partition info so you can mount it and get your data back ..works with ext2/3

  9. #9
    Join Date
    Sep 2009
    Posts
    48
    OnTrack data recovery would be the one to ask. We have used them before. It costs about $1,500.

  10. #10
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    Jul 2007
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    Have you tried Hiren's boot cd?
    Prashant T.

    Don't run after Success. Run after Excellence and Success will soon follow.

  11. #11
    Join Date
    Sep 2007
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    368

    *

    Quote Originally Posted by rustelekom View Post
    I remember i did such on Windows server many years ago and be able restore most of data with super best tool "Tiramitzu". About few week ago customer accidentally format his disk and I was need find soltion again but for Linux O/S. Likely, customer have a backups so we just restore his data from backups but when i search internet i found interesting tool: http://www.data-recovery-software.ne...Recovery.shtml
    You can try at least.

    I use this tool some time and recover data, even system is reinstalled.

  12. #12
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    You people do not read. He already fixed it.

    I was able to fix the file system enough with some e2fsck'ing to get the data off it. Wasn't anything terribly valuable anyway
    Steven Ciaburri | Industry's Best Server Management - Rack911.com
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