Ok folks here is the thing !! i have a wstern digital 250 GB usb/fw external hdd. now i want to use it to backup my mac (60 gb hdd), tsfr files to and from other ppl's pc's !! and relocate my itunes music !! and also to use it while recording music in garageband/logic !! now i am clueless about what to format it as, ,,, as i have been reading things about how the max file size in fat 32 is 2 gb and how mac only read ntfs and doesnt write to it etc etc etc .... my questions are 1 > what format or formats should it be in to be used on both mac and PC (i just need to keep like 10 gb's for pc as i just have to transfer files to and fro) 2. is there any use to also use it as a bootable disk ?? 3.is making partitions better , as in does it help performance i would relly appreciate the help !! happy halloween everyone !!