>Bill > >Thanks - So both your WD 120gb 8mb cache drives are recognized in drive >setup and system profile externally? They definitely show up in system profile on all the systems I'm using. I think I initialized them using OSX Disk Utility. I would expect OS 9.2 would be equally capable, but can't remember if I tried that. >Which system(s) are you using? I currently have boot partitions setup with 8.6, 9.22, 10.24 and 10.25. The 8.6 partition uses the "Heat Utilities" firewire extension. I couldn't get OS 8.6 Apple Firewire extensions to see the external drive. > >Under 9.04 apparently this is not unusual. However I was surprised >that 10.2.3 would not support it being initialized. That surprises me too. It's been a while but I believe I initialized both my drives using whatever was the current version Disk Utility and OSX at the time. BTW, my firewire external drives do go to sleep when they are not in use. I'm not sure if it's the drive itself, or the Mac OS that controls the sleep schedule. It's been OK as is so I haven't tried to modify the sleep schedule.