User guide

154 Parallels Desktop for Mac User Guide
Each time you close the virtual machine, depending on the action selected, the changes will be
committed, or dismissed, or you will be asked what to do in this particular case.
 If you select Discard changes, then at the virtual machine shutdown, each virtual hard disk
will be rolled back to the state it had before the last virtual machine startup.
 If you select Apply changes, all changes will be saved on the virtual machine disks at virtual
machine shutdown.
Note. The virtual machine with the Undo disks option enabled cannot be compressed, and its
disks cannot be compacted.
If you enabled the Undo disks option, you cannot create snapshots for this virtual machine, and,
vice versa, if the virtual machine has at least one snapshot, you cannot enable the Undo disks
option.
Note. The Undo Disks option cannot be set for the virtual machine that uses the Boot Camp
partition.