From nookDevs

SamuelHalff has written NookColorUMS, a simple app to be able to easily mount any given NOOKcolor partition to your PC.

The current version of NookColorUMS as of this writing is 0.3b (Beta) and can be found here. See the original XDA thread for likely updates).

This can be used, for example, to open your SD or internal data on your PC..

You can mount pretty much any partition to your computer with this app: - SD - Media (internal drive for your media and documents...) - SD Partitions (up to 4) - Internal storage - BE VERY CAREFUL WITH THIS!!

There are two "mount points" on the nook (lun0 and lun1)

So you can simultaneously mount two partitions.

As an example, you can mount SD on 1st and MEDIA on the 2nd.

Each mount point has it's own tab.

Please note that changes to the drive will not be saved if you do not properly unmount/eject the drive from PC (in Ubuntu: right click, unmount. In Windows, eject.).

This has been tested on HoneyComb and Froyo (not in Eclair 1.0>1.1). In Froyo: USB Mass Storage (Notification bar) should be turned off.

Compatibility mode will need to be disabled in Spare parts (reboot required).