USB SSD disappeard after February 25th

Thanks! That could very well be the problem. I was a bit impatient and thought I could update the BIOS and see if that helped, rendering the OS disc unbootable and Roon recovery via USB stick couldn’t recover it due to a partition table error. I ran live Ubuntu, formatted and repartitioned the disc, installed the latest ROCK build and installed a backup from the 25th of February. A new problem occurred, the backup was too old for the Roon build, I think. Kind of hard to desipher the error message when it disappears out of the screen.

So, a new problem has emerged. Hopefully there’s a workaround.

Edit 1:
I could see the error message on my tablet. Roughly translated:
“This version of Roon isn’t compatible with your database. Usually it means that Roon was downgraded due to an installation of a version that changed the database format.”

Edit 2:
Found a possible solution here.

I believe the downloaded ROCK version is too old.