1.
From the front panel, 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'
5. When the format has completed select 'Settings' --> 'Maintenance' --> 'Use HDD'
6. Select 'Settings' --> 'Maintenance' --> 'Start NAS'
Then your B2 will be ready to do the 'Import', all being well. If you are not using NAS, skip step 6.