I have 4 bays in my Dual G4 and initially had one 80GB for the OS and Apps and two 120GBs for music and misc data. I purchased two 300GBs to replace the 120GBs. The 300GBs are installed in their RAID 0 just how I wanted; but the method I planned on using to move all data already on the 120GBs to the 300GBs is not working. I have an old Maxtor Firewire enclosure that I removed the 40GB out of and put in one of the 120GBs drives in and when I plug it in it never mounts and DU never sees it. Then I tried to utilize my 4th bay on the IDE cable with my 80GB with the main drive. I hooked the 120GB up as Cable Select then booted... I waited about 10-15mins and all I got was a gray screen with the "NO - Circle Crossed-Out" sign. I unhooked the 120GB and reset the PMU and PRAM. Finally, I'm booted back up fine, but need a solution to get this data from the old 120GB onto the new 300GB RAID hooked up. I was wondering do some Firewire enclosures have any limits on what size drive they can mount??? What can I do here? Thank you and please help.