NOOK User Guide USB Connectivity 157If you don’t eject the drive, you might interrupt an operation that is still in progress. Thiscan result in files that are corrupted or not copied. It can also leave your NOOK in a statewhere it is temporarily not able to connect to USB. If this happens, turn off your NOOKcompletely and turn it on again.One Drive or TwoAll NOOKs have internal memory, which is presented as a USB drive when you connect to USB.The drive has the name NOOK.If you insert a supplemental microSD card in your NOOK, your NOOK will have two USB drives.The second one is for the supplemental card.If you put personal files in the correct locations in the internal memory and on asupplemental microSD card, then the content will be found. If you put personal filesanywhere else, they will be on your NOOK, but your NOOK will not find them. For moreinformation, see “Where You Can Put Files” on page 163.Note the following key points between these drives:• The nook drive (for your NOOK’s internal memory) has predefined top-level folders that youmust retain and use.• Your NOOK will not find folders or files placed outside of the predefined folder hierarchy on thenook drive.• Your NOOK places B&N content in the folder my B&N downloads. You cannot place contentthere.• Screensaver and wallpaper images must be placed in the correct folders on the nook drive.Images placed on the drive for the supplemental microSD card are not available for screensaversor wallpapers.• You can place digital content (eBooks, magazines, and newspapers in EPUB, PDB, and PDFformats), music (MP3 and OGG files), and audiobooks (MP3 and OGG files) on either drive.Content you place on the drive for the internal memory competes for space with yourNOOK’s library of B&N content. Your NOOK automatically archives content in the MyB&N Library section of your library if it is running short of space in its internal memory.If you have a supplemental microSD card, we suggest that you put your personal digitalcontent and music files on the supplemental microSD card.
