How To Format A B2 Internal HDD
Firstly, do you have a backup (Export) of your music collection stored on a USD HDD or memory stick? If you do, then I think that the way forwards is as described below in steps 1 to 8.
If you do not have a backup, can you rebuild your music collection by re-ripping all of your CDs? (Very painful).
Assuming that you have a backup, then the best way of fixing this is to format the HDD, then 'Import' your collection back on to the B2 from the USB device.
1. Select 'Settings' --> 'Maintenance' --> 'Stop NAS'
2. Select 'Settings' --> 'Maintenance' --> 'Use SD'
3a. Power the B2 down, wait 30 seconds and power up. (This step is important)
3b. Leave the B2 idle for 30 minutes. (This step is also important)
4. Select 'Settings' --> 'Maintenance' --> 'Advanced' --> 'Format HDD'
If at this point you see an error message on the front panel display, the it is is probable that the internal HDD has failed with a hardware fault.
If you see a message ‘Partitioning’ briefly followed by another message ‘Formating’ which should show for a time between approximately 1 and 3 minutes, depending on the capacity of the HDD, then the HDD is formatting and you should continue to step 5.
If ‘Formating’ disappears after a few seconds then the format has failed, then the above steps 3 and onwards should be repeated. If the problem persists then the HDD is probably faulty.
5. When the format has completed select 'Settings' --> 'Maintenance' --> 'Use HDD'
6. Select 'Settings' --> 'Maintenance' --> 'Start NAS'
7. Plug the USB backup device back into the B2
8. Select ‘USB Functions’ --> 'Import from C’ (or ‘A’)