Why do some SQL Server databases go into a "Recovery Pending" state after shutting down / restarting on Linux?

I built a secondary PC from old parts as a server for SQL Server databases and I went with Linux/Ubuntu 20.04 because it's free. I knew it would not be easy to set this up (I'm rather a Windows user) and I had quite some issues/challenges along the way but I got it working. My only headache now is that basically every time I shutdown or reboot the PC, some of the databases are getting the "Recovery pending" state and then I have to run the usual script to fix that. (which for some of my big DBs are taking quite a long time to finish) I thought I need to manually stop the SQL Server services every time I shutdown the PC so I tried this before that: sudo systemctl stop mssql-server Yet I still had one of the DBs in this pending state after booting. Now maybe the issue is that DB is on a different drive? The DBs not affected by this state are on the main SSD where Ubuntu is installed, if that makes any difference. I store the DBs on internal storage devices (1 SSD + 2 HDD). Someone hinted on stackoverflow that maybe the HDDs were mounted AFTER the SQL Server services has been started? How could I fix that? Thanks for any helpful feedback. EDIT: I checked the logs, the database files cannot be found: This might prove that the SQL Server services start to early, I guess.