First off this is from my iphone so sorry for poor grammar/spelling... Anyway I got the flashing folder error, booted from the snow leopard install disc, and want to get a dmg of my hd so I can recover files if possible.... I get Input/output error while trying to create the dmg. I get invalid b tree node size error when verifying and I can't repair it. Is there another way to backup at this point or salvage files without buying/using other software? I'm at college so resources are limited. I don't have a backup so it's fairly important that I can somehow recover files. Also I've tried resetting PRAM with no luck. Is the drive busted beyond repair or is there something I can do? thanks!