hi there. i've been using a WD 250gb external hard drive for the last couple of months for my macbook. however, i've got a bunch of stuff on my four year old slot loading iMac that i'd like to back up. the external requires OS 10.2, and i've only got OS 10.1 running on the imac. is there any way i can still get the external to mount if i don't have any 10.2 or higher discs to install on the old machine? thanks in advance.