1.    02 Dec 2015 #1
    Join Date : Sep 2015
    Posts : 11
    Win 10 upgraded from Win 7

    Disk Signature Collision Problem

    Hi, on boot after normal night shutdown, win10 would not boot, got to Win10 icon then the intro music and just a grey screen.

    Using the Win 10 install disc, every recover option said after selecting the o/s, this repair option is not available. After trying numerous other fixes, I ran the EasyRE Boot repair utility which has rescued me before.

    That report there were "overlapping partitions on C drive" I ran the auto repair option which recovered boot ability - after running 2 re-boots (first one stalled). In the process some of my drives were re-lettered

    Using Windows Disk Manager I re-assigned the drive letters, but one drive with 2 partitions is reported as "offline" due to Disk Signature Collision Problem

    In Win 7 I would have run DiskPart to correct the uniqueid records

    This does not seem to be available in Win 10 and I cant find any forum or mention of how to correct a Disk Signature Collision Problem

    I would rather not loose the data on that drive.

    How can the partitions suddenly become overlapping after a normal shut down ?????

    Can anyone help please

    Rgds Jonathan
      My System SpecsSystem Spec

  2.    02 Dec 2015 #2
    Join Date : Jul 2014
    San Jose, California
    Posts : 1,871
    Ubuntu14.04x64 MintMate17x64 Win10Prox64

    Disk signature is applied to the whole disk, not partition. Normally happens when you clone the disk and is available in Windows 10. Here's an example:
    I change the last digit from 6 to 7 then change back from 7 to 6:
    Click image for larger version. 

Name:	a.jpg 
Views:	6 
Size:	275.6 KB 
ID:	51506
      My System SpecsSystem Spec

  3.    02 Dec 2015 #3
    Join Date : Sep 2015
    Posts : 11
    Win 10 upgraded from Win 7

    Hi Topgundpc, many thanks for quick reply.

    When I tried 'diskpart' from an elevated prompt, it accepted the command but the diskpart prompt never appeared despite a wait for it.

    I should have tried again . Instead, as so many functions have been changed in Win10, I did a search for diskpart+Win10 and found no specific results showing it was on Win10.

    Tried now and all is good

    Again many thanks, rgds Jonathan
      My System SpecsSystem Spec

  4.    02 Dec 2015 #4
    Join Date : Jul 2014
    San Jose, California
    Posts : 1,871
    Ubuntu14.04x64 MintMate17x64 Win10Prox64

    Great. Glad you got it sorted.
      My System SpecsSystem Spec


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