I have an internal 80 gig drive and external 80 Western Digital USB 2.0 Hard drive. I used casper XP to copy all the information from one drive to the other with the disk to disk copy. I went into the bios, under legacy devices and enabled usb dos emulation. This added the usb drive to boot option. Changed it to usb devices. The system boots, goes to the USB 2.0 device and says please insert disk or other media, press any key to restart. The external hard drive will not boot. Any suggestions?

As has been state many times in the past, you cannot simply copy the XP OS from one HD to another (USB or otherwise) and expect the copy to work. It has to be installed (if you get really lucky you might be able to do a disk image)-- copying doesn't cut it.

I just wanted to post why my situation didn't work. The casper xp user manual says: NOTE: While an external USB or Firewire hard disk may be used for the backup on a desktop system, Windows is not designed to boot and run directly from an external device. Consequently, an externally attached hard disk must be removed from its external USB or Firewire enclosure and installed as a replacement for the internal hard disk in order to boot from it. I took the drive out of the enclosure, replaced it with the current one, worked like a charm.