[PatNY]

For some reason, B&N designated the internal fixed storage of the Nook HD and HD+ as "/mnt/sdcard/" ... and used "/mnt/ext_sdcard/" for the removable micro SD card.

I kept wondering why my books kept going to internal memory even though the path in Calibre Companion was specified as "mnt/sdcard/"

A google search revealed the solution. I'm posting this information in case anyone else runs into the same problem. Just manually input the path in CC's settings to create a folder in "/mnt/ext_sdcard" and the books will go to the removable card.

--Pat