Recover data from a diskpart > clean command

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  1. Posts : 10,796
    Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
       #41

    lonewolfs said:
    Here's the requested file Attachment 320535
    I see 55AA in the file. That's a mark : end of MBR. Inside some code: db515a8 ... don't know why. All in sector 0.

    In sector 1-2048 (so 1MB).... all zero's!!!
      My Computer


  2. Posts : 10,796
    Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
       #42

    On master boot record (MBR) disks, only the MBR partitioning information and hidden sector information are overwritten. On GUID partition table (GPT) disks, the GPT partitioning information, including the Protective MBR, is overwritten. If the ALL parameter is not used, the first 1MB and the last 1MB of the disk are zeroed. This erases any disk formatting that had been previously applied to the disk. The disk's state after cleaning the disk is 'UNINITIALIZED'.

    =>English is not my native language, so maybe I read it wrong(?)
    On master boot record (MBR) disks, only the MBR partitioning information......
    So only MBR (sector 0) will be overwritten. Though I see.... first 1MB has no data at all .... all hex0 bytes
      My Computer


  3. Posts : 10,796
    Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
       #43

    Maybe Greg has any idea what happened.
      My Computer

  4.    #44

    My understanding is the Clean command is supposed to zero the boot sector and partition table. That's why it works to resolve installation problems.


    PW when run correctly can undelete these.

    Please confirm if you ran PW Partition REcovery Wizard Quick Scan and allowed it to complete? This should normally be enough.

    If not please run the Long scan.
      My Computer


  5. Posts : 42
    Windows 10 Pro (64-bit)
    Thread Starter
       #45

    I'll run the PW Partition REcovery Wizard Quick Scan and post the result here when done. I had previously stopped it to jump to Testdisk
      My Computer


  6. Posts : 42
    Windows 10 Pro (64-bit)
    Thread Starter
       #46

    Partition Recovery Wizards Results


    Hi all,

    I finished running full scan and it seems I am a bit out of luck...

    Recover data from a diskpart > clean command-pw_fullscan.png
      My Computer


  7. Posts : 7,024
    Windows 7 Home Premium 32 bit
       #47

    Hi lonewolfs,

    Unfortunetely I can't see anything intelligible in mbrsect.txt attachment in your post #42. for some reason.

    I can see only this Qۨ U

    Till Kaktussoft or gregrocker (who I believe is out of the country currently) return to this thread, I may try my hand in it. :)

    If you have 64bit Windows, download BOOTICEx64_v1.321.rar from Booooooooting ? View topic - [ BOOTICE: A poweful boot-related utility ] - v1.3.2.1 (If 32 bit , then BOOTICEx86_v1.321.rar)

    Extract it to a folder say Bootice. You will have BOOTICEx64.exe in it.

    With only your 2TB problem external HDD connected ( Please safely remove all other external HDDs, pendrives, card Readers ), run it, make sure your problem external drive is selected and click on Sector Edit tab.

    Bootice: (Main Screen)

    Recover data from a diskpart > clean command-22-06-2014-23-43-32.jpg

    Post the sector 0 Screenshot. It is actually the first sector, which is the bootsector. Let me examine it and see whether I can make any sense out of it.

    LBA 0: (First boot sector, that contains the MBR code and Partition Table)

    Recover data from a diskpart > clean command-22-06-2014-23-45-50.jpg

    Next, click on the Partitions Icon, the very first icon in the tool bar, that is supposed to show all the partitions and post a screenshot of whatever you see.

    Partition Table:

    Recover data from a diskpart > clean command-22-06-2014-23-52-10.jpg

    (In this case it shows the partitions in my good external drive with four partitions.)

    You may find some info on Bootice here in my post: Screenshot 1,2,3,and 4 Lost partitions!
      My Computer


  8. Posts : 42
    Windows 10 Pro (64-bit)
    Thread Starter
       #48

    Hi,

    Thanks for looking into this.

    Here are the screenshots.

    Recover data from a diskpart > clean command-sector_0.png

    Recover data from a diskpart > clean command-partitions.png
      My Computer


  9. Posts : 7,024
    Windows 7 Home Premium 32 bit
       #49

    OK, the bootsector has only the Windows ID 51 DB A8 05 and disk Signature 55 AA.

    No partitions are visible.

    Let me roll back through the previous posts, get a hold on what all has been done and then come back.
      My Computer


  10. Posts : 7,024
    Windows 7 Home Premium 32 bit
       #50

    You have already used TestDisk. But you straightaway went into partition search. But now let us get into Advanced File System Utilities and get some information on the disk status.

    Run TestDisk

    First Screen: Select No Log ENTER

    Second Screen: Select your correct drive (your faulty drive) ENTER

    Third Screen: Intel ENTER

    Fourth Screen: Select Advanced File System Utilities ENTER

    Fifth Screen: Does it show your drive with the first Partition?

    Post the screenshot of the fifth Screen.

    I will be missing every now and then but generally peep in once in a while if I am present. So do not expect an immediate response but keep looking.
      My Computer


 
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