Preserve M1 VM across device restore?

Discussion in 'Parallels Desktop on a Mac with Apple silicon' started by gVirtual, Oct 6, 2021.

  1. gVirtual

    gVirtual Junior Member

    Messages:
    18
    Hi.
    Looks like i need to back out of a Monterey beta install due to compatibility issues with Parallels (Parallels VM exits when starting a camera in Teams). Don't have time to debug this and just need to get back to a stable work environment.

    I'm trying to figure out what happens with an M1 VM with TPM enabled and in use if I copy that VM off somewhere, wipe/restore the device, and copy the VM back onto the same machine. Will that work? Is there anything about the TPM implementation that will cause it to potentially not work?

    I don't understand whether or not the TPM uses the M1's secure enclave, some local keychain thing that won't survive restore, or some derivative of a machine id which might not persist after the steps I describe. I've tried looking at KBs but I can't convince myself that I can predict what'll happen.

    Thanks!
     
  2. SamS4

    SamS4 Hunter

    Messages:
    129
    You'll need to disable TPM before you wipe your computer. When TPM is on it locks the instance of windows 11 to your virtual machine.
    I don't have the KB article handy but you can search parallels and they will tell you how to disable TPM.
     
  3. gVirtual

    gVirtual Junior Member

    Messages:
    18
    Thanks...this got me pointed in the right direction. There's actually a KB article on how to export/import relevant items from the keychain to make this work. It's here:

    https://kb.parallels.com/en/122702
     
  4. SamS4

    SamS4 Hunter

    Messages:
    129
    That's it!
    Man! It's a lot of work o_O
     
  5. gVirtual

    gVirtual Junior Member

    Messages:
    18
    Not really a ton of work - just copying the VMs to their new location and exporting/importing a couple of keys from the keychain.
    Most importantly, it works and my VMs are up and running on the paved machine.
     

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