Greetings!

In this particular instance, the 10GB drive is from an old player, and should be partitioned, but empty. I know this is the case.

What might be possible, and what I would recommend, is to:

a) remove your existing drive
b) reinstall the new drive as the master
c) rebuild the drive, using the disk builder
d) let it run the self test for a while.
e) load up the new player software, and try to sync a few files into it
f) run and sync the player for a little while.

- This will validate if the drive survived shipping, or if the problem exists only when two drives are connected (i.e., bad drive cable).

If it continues to work, reconfigure, putting your existing drive in place, wiping the /fids directory of the new drive and making that drive slave again (jumper). Sync test.