Originally Posted by misharsenal
2. I am formatting the memory card in the Nook itself by unmounting and then formatting. I get the OK signal everything with the SD card image and a check sign.
I don't think Calibre has anything to do with your problem.
Does your Mac see the entire sd card or just a portion?
The 3 that I use successfully have been formatted before adding them to the ereaders. I just attach them with an sd to usb adapter to a usb slot on my pc and when windows recognizes the card I format with fat32.