After almost a year of regular operation, after a normal update, one of the disks is no longer mounted, not even on reboot. In Storage -> Disks is regularly listed (device /dev/sda). In Storage -> File Systems is listed, but:
/dev/disk/by-label/WD_RED1_4TB (instead of /dev/sda1)
_empty_ (instead of WD_RED1_4TB)
The Mount button cannot be used because it is grayed out.
What do you advise me to do?
I'm using OMV 4.1.26-1 (Arrakis), Linux Kernel 4.19.0-0.bpo.6-amd64, SMP Debian 4.19.37-5+deb10u2~bpo9+1 (2019-08-16) x86_64.
Thank you so much for your help.