On 28-11-2006 21:02, SKYGRAM, skygram at gmail.com, wrote: > Wasn't this a problem that raised it's head during the past year when > updating Tiger? IIRC we had this up from Jaguar. > Eventually we were told to disconnect all external firewire drives > when doing system updates? IMB/HE it's always the best to disconnect all, except monitor(s), kb and mouse, before updating! My advice: Take this as an "iron-rule"! It's simple and sure! > There must be an Apple Knowledge Base document on this subject. Yep! Do a search for "update OS +rxternal device". HTH, Jo Hissel