Windows 10 VM not recognizing resized HD

Discussion in 'Installation and Configuration of Parallels Desktop' started by RHS, Jan 13, 2020.

  1. RHS

    RHS Hunter

    Messages:
    101
    Greetings,
    I am using PD15 running a Windows 10 VM.
    Both are using the latest updates.
    I have a variable size VM. It is not fixed in size.
    I wanted to change the size of the VM hard drive from 512GB to 750GB.
    This Windows 10 VM is running on a Thunderbolt external SSD drive; it is not running on the primary HDD where the Mac OS is located.
    I changed the HDD capacity to 750GB but when I start the Windows 10 VM, Windows explorer still says '512' GB HDD, not 750GB or thereabouts.
    Would anyone have any ideas on how to get around this?
    Thanks.
     
  2. Maria@Parallels

    Maria@Parallels Problem solver

    Messages:
    8,122
  3. RHS

    RHS Hunter

    Messages:
    101
    Hello.
    I tried the first part but it did not help. Does my VM need to be STATIC first and not variable?
     
  4. RHS

    RHS Hunter

    Messages:
    101
    Hello. I followed the steps and installed the trial version of the Acronis software. It will not allow me to resize the disk since it's just a trial version.
    upload_2020-1-17_10-1-46.png
     
  5. RHS

    RHS Hunter

    Messages:
    101
    This VM is on an external Thunderbolt SSD because trying to shrink it while on the same SSD on the Mac will corrupt/destroy the Mac file system. Now it seems I can neither expand the variable disk successfully; the Windows VM does not recognize the new size of the disk, and changing it to static disk at the new size doesn't work either.
     

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