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.
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'
3. Power the B2 down, wait 30 seconds and power up. (This step is 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 ‘Formatting’ which should show for a time between approximately 2 and 5 minutes, depending on the capacity of the HDD then the HDD is formatting and you should continue to step 5.
If ‘Formatting’ 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 USD backup device back into the B2
8. Select ‘USB Functions’ --> 'Import from C’ (or ‘A’)
If the format fails after a couple of attempts then it is likely that the HDD has suffered a hardware failure. In this case, contact Brennan through this Forum and request further assistance.
Regards,
Peter.