Hi, yesterday I messed up my hard drive I trying to install OS X 10.5.6 Leopard on a 2002 iMac G4 running 700 MHz. I accidentally did a restore from the image file of Leopard to the hard drive. Realizing that leopard does not work on 700 MHz systems,I tried to reboot from an OS X 10.4 CD and now it won't boot. So I set the G4 into target mode connected it via FireWire to my 2009 Mac Mini Intel running 10.8 mountain lion, went to disk utilities and disk utility says that the hard drive on that computer cannot be altered erased or partition. I think I need to format that hard drive as it may be either protected or viewed by the system as unwritable. What can I do as disk utilities on my Mac mini will not?