I don't think there's anything that can be done I just want an explanation. My Mac mini froze while an update was happening. So i screwed something up and can't use certain apps and install things. I know the solution was to reformat my mac, but it won't let me. I have the disk inside and when it starts up the installation it just says the software can't be put on the drive or something like that. it won't even let me get to the installation part it just tells me to restart on a different network. So i have a mac mini but have misplaced my os x disk (I think my ex roommate stole it) so I'm using a buddies os x start up disk for his G5. as far as I know OS X disks are universally compatible am I wrong or am I just screwed. Any advice would be great.