turns out it's a 2.0gb///
if you're stuck at the ADMINISTR 00 MB thing,
use the disktool to create an encrypted partition to bring the drive down to "real" size...
I had to make the partition 5954 MB and then the thing showed ...
ADMINSTR 1968 MB ...
that was the max.
one way of telling is if both "disks" re mount properly in explorer.
if you get the error USB device had problems message .. your encrypted partition isn't big enough ....
YMMV