as the title infers, 3 nights ago i installed 10.4.7 on my Rev. C 12" PB and when it finished i clicked shut-down, then went to bed. yesterday morning when i woke up to start up my 12" PB again, it will never get past the light grey screen with the dark grey apple. I never get the little spinning graphic below it that (i'm assuming) indicated OS X is loading up. It just sits there frozen. I tried to boot in target mode and repair the disk with my MBP, but it tells me that it can't unmount the image to repair it. I also tried resetting the p-ram via cmd+option+p+r but to no avail. Any help would be greatly appreciated. I upgraded to Tiger when it first came out and unfortunately i can't find the install DVD, but i do have the original Panther install DVD that came with the PB, as well as the install DVDs for my PPC mac mini and my MBP. I know that when i pop in the MBP DVD, i get a kernel panic, and i'm assuming that's because that's written for intel hardware. PLEASE HELP because i have A LOT of important information on this machine and would love to continue to ues it. (BTW, i've got a lot of my online user names and passwords on a sticky note that stays open on my PB desk top. When i boot into target mode, are those temporarily saved any where so that I could open them up and retrieve that sticky?)