I have an ext4 formatted external hard disk drive to be mounted automatically when I start LMDE. This is managed by a setting in the file manager Nemo. This stopped working when I upgraded from LMDE 6 to LMDE 7 in November 2025.
After the upgrade it did not automount any more despite the tick box in Nemo was still ticked:
Nemo > Settings > Behaviour > Automatically mount movable media when inserted and at start [tick box] Remark: My translation to English.
When I have read in forums I have learned, correct or not, that this tick box is overridden by a changed setting for ext formatted media originating from Debian 13:
/usr/lib/udev/rules.d/64-ext4.rules the row:
SUBSYSTEM=="block", ENV{ID_FS_TYPE}=="ext2|ext3|ext4|ext4dev|jbd", ENV{UDISKS_AUTO}="0"
By changing the "0" to "1", the automount works again for me.
This is still the case, only a few days ago after a system update I needed to do this procedure again.
If you also get this problem, I hope this will help you.
I have an open bug report filed with further information and related links:
Automount tick box has no effect any more #3683
Henrik Hemrin
17 maj 2026
Artikeln återskapad 6 augusti 2026.