Undo Changes

On Windows, Partition Table Doctor gives you the option of Undo Changes. In the unlikely event you need to reverse the changes made by Partition Table Doctor, you can use the undo file to return your disk to the state it was in prior to the repairs.

By default, Partition Table Doctor creates an undo file automatically when you have make changes (i.e. Save, Rebuild MBR, or Fixboot).

Warning: If you are not satisfied with the results of the repair, click the Undo Changes menu immediately. You should not try to undo the changes if you have "Fill Sectors".