Unallocate Bitllocker Partition After Install New Windows RRS feed

  • Question

  • hi

    i encrypted  partition via bitlocker in windows 8

    after install windows 10 partition in disk manager is Unallocated size

    please help me

    Wednesday, February 24, 2016 3:30 PM


  • Hi,

    According to current situation, we could try to rebuild the partition table to see if can bring back the drive letter. About how to repair and rebuild partition table, there are some third-part software can be used, such as TestDisk, please check this link for more information.

    If rebuild partition table doesn’t work, problem seems a bit frustrating. I search online for a long time, a user has similar issue like you recovered the lost bit-locker partition using TestDisk. He provided a guide in here, please refer to this link for some prompt, pay attention to the starrxu’s replies.

    In fact, If the data stored in that BitLocker encrypted partition is very valuable to you, it’s willing to spend good money to some data recovery companies to recover them. However, if the data is not very important, you could consider initialize that partition.

    Please Note: The third-party product discussed here is manufactured by a company that is independent of Microsoft. We make no warranty, implied or otherwise, regarding this product's performance or reliability.

    Best regards,

    Teemo Tang

    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact

    Thursday, February 25, 2016 7:01 AM