OK, Leopard has gained some problems. the disk cannont be repaired. in leopard disk utility (install disk booted) it says "invalid number of allocation blocks", if i verify instead of repair, its says same. booted in tiger it says of leopard drive that it has an invalid peof. my powermac will no longer boot from the leopard drive, and i have since been having problems mounting it even though it can be seen. originally to fix the problem i repaired the disk from tiger, and it seemed fine. but after installing a leopard update, the symptoms were back. and the tiger trick no longer worked. so i tried installing the ATA hi-cap drivers onto leopard in case that was the issue and it booted up (maybe a coincidence? who knows) when i came home from work my mac was shutoff even though i had left it on. and was later told it shutoff on itself. which leaves me where i introduced a description of the problem, and not being able to mount. at this point i am ready to install a fresh copy on a spare hard drive i have just in case its a physical issue involved somehow, but i have no backup. is there a way i can mount or access the drive to use migration assistant or just flat out copy my iphoto database and other such files? because i've tried archive but it won't even give me that option. it jus shows the disk with an exclamation mark from the install disk boot. PS i have a copy of disk warrior 4 that an old room mate gave me but i'm not familiar with it at all. i don't know if or how it could help.