Is there any way to try to fix an HDD which has, in effect, disappeared ? I tried a factory reset but that achieved nothing. I don't want to reformat the disc ( years of recordings and children's favourites). I don't currently have custom firmware. Trouble started last night when recording was apparently underway but nothing turned up in "Media" . I eventually tried an HDD test. The progress bar ran to end twice then on the third pass it stuck about 70% of the way through. I left it 30 mins before deciding to abandon the test. I found the only way to do that was to power off. I then tried again with the same result however now, after powering up again the Data Storage option is greyed out, the info re disc capacity in the top right has no data (it was about 50% full) and the "Media" button yields no response.