Sometimes it seems nothing's ever simple. To answer your second question first, Don, I was using a Time Capsule for backup, with Time Machine. As Wayne says, Time Machine editors will let you alter the interval between backups, but using them requires that the machine be repointed to the backup drive after every reboot. That's a nuisance, since a) my aging iBook, frequently being pushed to its limits, fairly often requires unscheduled reboots and b) my aging brain, ditto, fairly often forgets this kind of detail in unexpected circumstances. I don't like the idea of relying on a supposedly automated backup procedure that's no longer automated and might from time to time not be working because I'd forgotten the necessary step to make it kick in. Who knows how long it might be before I noticed? I feel more comfortable relying on a routine of regular, predictable, manual backups to another drive. Which brings me to your first question. The main reason Time Machine's default hourly backups were such a nuisance was that on the iBook they took so long and slowed other concurrent tasks to a crawl. I think a new, faster and more powerful computer — a Mac, to be sure — will at the very least minimize the duration and the performance penalty of future backups. Also, I understand that Time Machine's own code can be tweaked in Terminal to do only one backup every 24 hours, which is what I really want. In any case, the Time Capsule issue has become moot for the time being. The TC died last week. Sic transit memoria. On Feb 21, 2011, at 10:50 PM, Don Green Dragon wrote: > I've been lurking with respect to the discussion with respect to Time > Machine. >Why would "a new computer" --- a Mac I presume --- make any difference!?!?!? > What do you use an an external hard drive for your manual backups?