How to shrink Mac OS Guest VM?

Discussion in 'macOS Virtual Machine' started by Adam44, Aug 28, 2025.

  1. Adam44

    Adam44 Bit poster

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    Currently running an M4 Max MacBook Pro, 128GB & 4TB, and Parallels Desktop 26 for Mac Pro Edition, 26.0.0 (57238). I built a Mac OS VM; I don't recall the minimum image size while building it; it's currently set to 128GB, and I can't find a way to shrink the image. I've gone into Disk Utility within the Mac OS VM, and deleted it to what appears to be now 60GB, but the .macvm file still sits at 137GB no matter what I do. I don't have the option within the Parallels Control Center settings to do any resizing of the HD, other than make it larger. Slider won't slide further to the left. Need to migrate the VM to a MacBook Air, and need to shave off the empty space. Help!
     

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