UMPC HD replication question
 

I got a Fujitsu U810 hand-me-down.

The 1.8" drive was formatted at the factory into 2 20GB partitions and logical drives. Trouble is, that's barely big enough (I've moved a lot of the non-Vista s/w to the D drive) to update some of the Vista updates (have had to delete the old restore files).

I'm familiar with how to replicate 2.5" drives on normal laptops but have no clue how to do this on a 1.8". I've been thinking of a larger drive but there's nothing larger with 5mm thickness than the stock 40GB drive.