I am the proud owner of a flawless Macbook Pro; my first lapper. My (Older) Seagate 75 gig Usb cabled external drive is a 'read only' and the directions and website don't address this issue. 'Mac OS standard' is in info file. It has no firewire port. It is older, maybe four years. Upon boot I get a non-repairable prompt indicating limited functionality. "Item cannot be modified", happens upon dragging a file to it. "Unexpected error... 61", when I try to dump file from drive. This drive is still writable and editable from my '01 G4. Everything is backed up on disc but I'd like to use the drive. Any help would be greatly appreciated. Everything is backed up on disc but I'd like to use the drive.