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Inaccessible Disk / Existing UUID

If you should encounter an error saying that the virtual machine disk is inaccessible or that a disk with this UUID already exists, this can be fixed by removing the disk and adding it back.

  • Right click on the virtual machine in the left pane of the VirtualBox Manager and click Settings. Navigate to the Storage section.
  • Right click the .vdi image and click Remove Attachment.
  • Right click "Controller: SATA" and click "Add Hard Disk." Click "Choose existing disk."
  • Navigate to the virtual machine .vdi file and press "Open."