I am using Acronis True Image Workstation 9.1 with Universal Restore. I bought 15 copies of this product to back-up all the hard drives at my place of employment. I basiclly installed both products on the machine and went into the console and selected "clone drive". I have done this for 13 out of 15 machines without a hitch. the 13 machines are a mixture of Windows 2000 and XP operating systems.When i get done cloning the drive i unplug the original drive and plug in the cloned drive and it runs fine... execpt for the last 2 machines.. The 2 machines always hang up at the start-up. the machine finds the CD-ROM and then it just sits there and the cursor blinks. I have also tried to boot off the cd-rom with no results. If i plug the original hard-drive back in, it will boot form the CD-rom then, and the machine functions properly. I would appreciate it if anyone has any tips for me.