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Thread: Partition table problems on external drive-winxp

  1. #1
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    Partition table problems on external drive-winxp

    on one of my two winxp-drives 2tb where i have overlapping partitions/partition tables C and D new things are messed up.
    1. I was using dockingstation orico 6518 series(Usb 3.0-I only have usb 2.0- and esata) for cloning -see here:
    http://www.sysopt.com/showthread.php...83#post1503483
    but i forgot to used esata. it was very slow.
    During procedure to switch my external drive to esata(forgot how its done)-no data could be seen after moment on when going out of usb 3.0-i gave it up and attached on "second" channel(at least i thought) but it was first SATA-channel and then chdsk(or is that autochk?) run during startup. it took almost 2 hrs for 1 TB. afterwards it said defective drive.
    Then i ran chkdsk P: /f /r (p= drive) in commandline inside winxp. but no errors on clean drive not the one where i messed it up. should i run from there?
    I have no backup!
    How can i save this drive?
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  2. #2
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    chkdsk is a dos type program and that means it is slow.

    When I goof like that, I just start over from scratch.

  3. #3
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    How can i start a selfhealing-process? i did it in my good 500gb-winxp-system. should i run chksk P: /f without /r in the drive which caused the problem? as usb-drive? or attached on second channel?
    wiht mybook-external enclosure i had to install drive first as usb then esata. must digout orico-instructions(docking-station which was involved). but beforehand partition table must be healed. maybe show partinfo.
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  4. #4
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    testdisk running

    Ran testdisk for the external usb 2.0 drive on a ok-500gb winxp-system.
    Structure ok, but there are mismatches with sectors. i have a log-file.
    it says cannot be recovered. i dont want to recover data.
    found a backup of partition table?
    should i run that trough too? what must be done further? i dont understand testdisk.
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  5. #5
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    Instructions found

    http://www.cgsecurity.org/wiki/Schri...llungsbeispiel
    These are the german instructions and very clear to go through. Hopefully i am succesful on my round birthday...would be the best present recovering data of non-backed-up drive....
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  6. #6
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    Very near to solve- testdisk heals

    with testdisk i can solve the problem with deleted/hidden partition.
    As in the instructions i have found two versions: both marked as D=deleted.
    Then i checked them. The one with no data i must leave alone, marked D.
    Then go to version with data inside. left/right-arrow to highlight then decide whether Primary or Logical or Extended(if i dont err).
    Which one?
    update:
    http://superuser.com/questions/37430...usb-hard-drive
    already found out: PRIMARY only ONE partition
    Then write at the end to recover partition table.
    since the instructions are for a booting-disk the situation seems different.
    Last edited by europanorama; 12-17-2014 at 11:27 AM.
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  7. #7
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    Writing partition table did not work inside windows

    Writing partition table did not work when running testdisk in windows.
    with hirens-boot-disk did not work at all the same way.
    will now try from usb-stick. or retry inside windows xp.
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  8. #8
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    Writing partition table did not work when external drive is attached as usb2.0. Will now attach as second drive.
    I could also try to set as extended instead of primary. then retrying as usb2.0
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  9. #9
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    Testdisk-results

    Here are the results: what further?
    only top-version shows partitiontable with files
    IMG_0899asr500_two_partitiontables.jpg
    IMG_0894asr500_headcylindersectorsmismatch.jpg
    IMG_0896asr500toosmall.jpg
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  10. #10
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    If it was mine, I would remove all partitions and reformat the drive from windows. Yes, wave bye bye to the data on the drive.

    A guess, but remove a empty or backed up partition overlapping the not backed up one.
    Last edited by Train; 12-18-2014 at 02:21 PM.

  11. #11
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    Testdisk-Forum is helping-will come back with results

    I am currently in testdisk-forum where i get help from the author grenier.
    i now have more new drives for backups.
    the problem is: testdisk-documentation is not precise enough for newbies who do not understand the mechanisme.
    PLS wait until i am back again.
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  12. #12
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    Okay.

  13. #13
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    I am trying to register in Terabytesunlimited-forum(see other thread about the problem) toget answers about testdisk-alternative "BootIt Bare Metal.
    will first clone my external 1TB-drive.
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  14. #14
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    BootItBM and Testdisk to solved messed up partition table

    I have two drives with these problems.
    a) bootdrive with overlappping partions
    b) external drive with showing as RAW, no data-access.

    b) i have go different instructions by both authors. could be my fault because i mentioned both drives and showed results of the findings.
    here are testdisk-instructions:
    http://www.cgsecurity.org/wiki/TestDisk_Step_By_Step
    I understand except
    NTFS Boot sector recovery
    does my external drive also need this recovery? does it normally have NTFS Boot sector?
    it was normally set, no special GPT(if i dont err) where no boot-option is possible. BooItBM has the options to decide which is used.
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  15. #15
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    Bootguard must be disabled

    Found a possible reason why I could not write.
    Bootguard(in cmos/setup) was enabled.
    could it also be when AHCI is enabled or other virus-protections?
    maybe better switching pc and disable all protections.
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