1.    04 Sep 2016 #1

    Clean Anniversary Install on C: Killed Second HDD

    This was really crazy. I have a hdd where I keep all my keep many things.

    So after the clean install, I go to my D: drive and it was wiped clean and wants to
    be formatted as UDF 201

    First time I heard anything about this file system.

    Comments ?
      My System SpecsSystem Spec

  2.    04 Sep 2016 #2
    Join Date : Jan 2015
    UK, Midlands
    Posts : 5,850
    Win 10 Pro (1607)

    Problems with drives becoming inaccessible after installing or upgrading Win 10 have been quite commonly reported. UDF is weird- that's e.g. DVDs. Are you sure you're not somehow seeing your DVD drive?

    Feel free to yell at MS. They have a range of problems they are supposedly fixing, widely reported.

    Hope you have a backup or are already wise enough to be using disk imaging routinely.

    What make of disk is it? Such problems appear to be related to certain manufacturers' disks. (Seagate, WD). I use Toshiba's, and haven't noted a report about those (yet).

    You could try Minitool Partition Wizard, or recovery software.

    Partition disappears in Windows 10 Anniversary Update
    Windows 10 Anniversary update problems, not recognizing external hdd - Windows 10 Forums
    Unable to access external hard drive - Microsoft Community
      My System SpecsSystem Spec

  3.    04 Sep 2016 #3

    I do keep a C: image and backup D: which was the one that failed (?). I move it to another sata port and it can be seen. This time it
    formatted as ntfs. Windows does not see it as drive D: so I used E: this time. A big burp with Windows and mobo/hdd.
    I will be needing a beer !!
      My System SpecsSystem Spec

  4.    04 Sep 2016 #4
    Join Date : Jun 2016
    Posts : 1,369
    Win10 1607

    Are you sure it aint just the AU Disappearing Partitions issue ?

    Windows 10 Anniversary Update Might Hide Partitions After Install - Windows 10 Forums
      My System SpecsSystem Spec

  5.    05 Sep 2016 #5

    Nope. It wiped the drive.
      My System SpecsSystem Spec

  6.    05 Sep 2016 #6
    Join Date : Jan 2015
    UK, Midlands
    Posts : 5,850
    Win 10 Pro (1607)

    Hi, depends how. For example, if it deleted the partition you can use a partition manager (3rd party) which can recover partitions. Or even freeware- like Diskdrill. There are many such programs.
      My System SpecsSystem Spec

  7.    06 Sep 2016 #7
    Join Date : Jun 2015
    Posts : 1,026
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)

    There will be no AU for me until the AU Disappearing Partitions bug is fixed!
      My System SpecsSystem Spec

  8.    06 Sep 2016 #8

    The partition was on a different drive and I did not try to restore, forgot about that ! I have been tracing this dde server problem since the last "upgrade". I have never had major upgrade problems from any Windows version since 3.1, I think was the earliest for me. I had the dde server error
    on one machine the last upgrade and on all three with the AU upgrade. I am too old to learn Linux, but Mint is starting to look good.
      My System SpecsSystem Spec


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