On 2/12/04 4:55 AM, "Brian Thorpe" <brithor52 at yahoo.com> wrote: > If you clone a drive for backup purposes and you have to switch to the > backup drive for all your needs, but you didn't deauthorize the "now > unused" hard drive, the unused hard drive still counts as on authorized > computer, right? No. The authorization is based on some hardware information in your computer, so you could use both your internal drive and a cloned external drive on the same Mac with that only counting as one. Kirk My latest book: How to Do Everything with Mac OS X Panther . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . kirk at mcelhearn.com | http://www.mcelhearn.com . . . . . . . . Kirk McElhearn | Chemin de la Lauze | 05600 Guillestre | France . .