Question: must I use MBR partition table to enable Acronis True Image to clone or copy the entire drive? Background: I upgraded v8 to v10 to ensure I had the best available support for cloning bootable disks on new Intel Mac Pro running XP Pro. I partitioned one 250G drive with GUID partition table, including one 32G FAT32 = C: where I installed XP Pro. All is well except that True Image [ATI] doesn't offer this partition as a source when attempting to "backup computer" or "clone disk". ATI does offer as source the four FAT32 partitions I created on external Firewire drive. NOTE: this drive I used MBR partition table. Also "Backup files/folders" seems to work -- at least it offers a directory listing which includes C: -- but I've not yet tested restoring to see if the result is a bootable disk.