I have used Paragon disk copy/Paragon disk image to transfer an OS to a spare HDD and back to new drives with great success . I have used it at work when building multiple ,identical PC's . I just built one PC and put the OS , drivers ,programs and installed Paragon .I added a slave drive and used Paragon to image C:\ drive to D:\ drive.Then fitted the D:\ drive into the second PC . All the componants were indentical ,hard drives were the same make and all 80g and the most important thing I was I'm using XP Corp , so no activation required .Were an education dept . I think norton ghost and a few other programs would do the same thing.