I just tried using the windows clone feature to backup my drive to an external usb drive and find that windows while loading reboots constantly. I believe this is due to the hal layer being incorrect. My drive configuration: Internal drives are 2 sata drives in raid 0 running windows xp External drive is 1 usb ide drive Answers to standard questions you may ask: The usb hd is found in the bios as a boot device, and in windows it is not a removable device. After cloning the internal drives to the usb drive, Windows does attempt to boot from the usb drive, when the bios is set to boot from that drive first. During the windows loading process the computer reboots. I removed the source drive from the machine to make the usb drive the only one, but it made no difference. I did not remove the drive from the usb case and put it on the motherboard because this is not how I want to use the backup of my source. I want to boot and use the backup image from USB. I did not run sysprep before cloning because I could not find information on the proceedure, the link pointed to in this post is no longer valid and searching acronis website for sysprep provides no results.