http://forum.androidcentral.com/barn...k-arounds.html
I tried to copy and paste the link originally... let's see if I did it right this time!
Nope that seems to error out!
On the main page of these forums there's the Sticky:
(How To) Nook Froyo
there you can select:
[TIPS] Nookie Froyo tips & work-arounds
then item 6 has the link to the program to repartition your SD!