Move Time Machine volumes to anther drive and have them not lose backups/data. I recently bought a Seagate 500GB Expansion drive (Amazon Lightning Deal for $65). I first tried Disk Utility's Restore function to clone the TM volume from one drive to the new one, but it wouldn't do it, stating that that operation was not allowed (permissions on the new drive?), but the old, tried and true, drag and drop method worked flawlessly. Now, I just need to save up for that 7200 RPM Seagate 250 GB internal drive for the Mini. Still gotta move some things among the drives in prep for that, too.