This is a remote help requst for a friend of mine who's stranded in Boston with no close Mac-head friends, so here goes, the problem according to my knowledge: Her PowerBook 12" (1.33GHz Combo Drive, I think) was working fine last night. When she woke up this morning, it was frozen, so she force turned it off and went to boot it up. After twenty minutes sitting at the Apple logo, spinny widget loading screen, she figured it probably wasn't going to boot and called me. So far we have done the following troubleshooting: Reboot the PRAM and NVRAM: no effect Booted from the system restore DVD: works, but doesn't help us boot from the internal hard drive So, it seems the computer itself is okay, but I'd assume SOMETHING is wrong with the OS X installation. She now has OS X 10.4.1 Tiger. And the little "I can't find the HD/System Folder" icon doesn't appear at the loading screen, it just sits there spinning forever. Any advice for a way we could troubleshoot this without losing all her data?