Ron Thanks - I figured that might be the only option. Bill Thanks - So both your WD 120gb 8mb cache drives are recognized in drive setup and system profile externally? Which system(s) are you using? Under 9.04 apparently this is not unusual. However I was surprised that 10.2.3 would not support it being initialized. Kunga I'll call western digital and see. David Thanks - but yes I've checked & double-checked the jumper settings both inside the G4 and now in the external firewire. The drive works in the external - I just want to change it back to one partition. Juan Thanks its a 120GB with 8meg cache. Thanks Lynn > In order to erase the three partitions it now has and turn it into one > 120GB drive, is there other software I can use? The easiest way it to put it back in the computer and format it. Otherwise you'll have to use 3rd party drivers and that could open a whole new set of problems.