I'm using Debian 9.4 on Gemini with triple boot (Android, Debian, Sailfish), firmware from July 2018.
As there is no auto mounting of microSD card, I've used the following steps to have 2 partitions (FAT32, Ext4) on microSD visible on Debian :
Just once :
$ sudo mkdir -p /media/sd
$ sudo chmod 777 /media/sd
$ sudo mkdir -p /media/sdext4
$ sudo chmod 777 /media/sdext4
Created "/etc/fstab" with the content :
/dev/mmcblk1p1 /media/sd vfat defaults,noatime,discard,user,umask=0000 0 0
/dev/mmcblk1p2 /media/sdext4 ext4 defaults,noatime,discard 0 0
I've realized that small errors on this fstab, or microSD nor inserted, make Debian to not boot ! The above one works (if there is a microSD inserted).
Any better way to auto mount microSD partitions on Debian ?