hold down option - that will bring up all bootable partitions, including FW disks, I think. Dont think it will boot off of dev tools disk, but you can sure try. Command for booting from disk is hold down "c" Zapping PRAM is command option P R I think the fschdsk that you were referring to was booting into open firmware - command option O F http://lheawww.gsfc.nasa.gov/users/dpf/mac.startup.html Good luck. bw On Sunday, March 16, 2003, at 03:50 PM, Luke Hinman wrote: > what's the key command combo to bring up any bootable system folder on > startup. how about to bring ups fschdsk or whatever that stuff is > (know what > i'm talking about). will it boot off os x developer tools disk? (what > is > command for booting from the disk? ...command-c... how about zapping > pram... > i don't want to do anything to mess it up further. thanks.