If you’re having recording problems using USB HDD in Blackhole.
I am using firmware: Blackhole 2.1.6.1 in VU Solo 2.
This is how I sorted it: Until the fix is found in any future Blackhole images.
Go to menu /setup /system /hard drive /filesystem Check press on external drive that will be showing on the screen press red button press yes. Then after a few minutes all your movies will be back. Come out of all the menu system until back to normal screen now look in R button next to menu button if you can see your recordings it is sorted.
(Make sure you go to *FILE CHECK* not Hard drive setup or Initialisation as you will wipe your hdd clean.)
If you get this message after doing all above (File corrupt or unusable) go back to setup and blackhole shutdown and do restart enigma 2. Then do as above again.
I tried all the moutpoints rebooted but for some reason never saved.
I no it’s a bit of a bother until fix is sorted it will get you by.

hope this helps.

regards
Andy.