Just for testing and because i need to deploy an updated system in the near future i converted the system as decribed here: https://www.devuan.org/os/documentation/install-guides/excalibur/trixie-to-excalibur.html and it now works as it used to with bookworm. Mounted: /dev/nvme0n1p2 on /media/root-ro type btrfs (ro,relatime,ssd,discard=async,space_cache=v2,subvolid=298,subvol=/DEVUAN) tmpfs-root on /media/root-rw type tmpfs (rw,relatime,inode64) overlayroot on / type overlay (rw,relatime,lowerdir=/media/root-ro,upperdir=/media/root-rw/overlay,workdir=/media/root-rw/overlay-workdir/_,uuid=on)
Regards, pd

