While creating a backup, it destroyed my disk. This is the worst behavior I can imagine.Creating the backup, it froze. Then, it would not boot Windows. Ghost had put its own boot blocks on the disk, build another partition, wrote itself into that partition, and would not boot windows. You could boot to Ghost, but it would just freeze or fail in booting windows.In the end, I had to format and rebuild the disk ...(Windows repair did not work. The system would not boot after repair, and repair did extensive damage.)