Bonjour
BAtocera v30 on X64
/userdata is mounted in RAM although in /boot/batocera-conf it is INTERNAL
# df
Filesystem 1K-blocks Used Available Use% Mounted on
none 16217620 0 16217620 0% /dev
/dev/sda1 6287696 1455176 4832520 23% /boot
tmpfs 262144 44 262100 0% /overlay
/dev/loop0 1436416 1436416 0 100% /overlay/base
overlay 262144 44 262100 0% /
tmpfs 16220276 0 16220276 0% /dev/shm
tmpfs 16220276 8 16220268 0% /tmp
tmpfs 16220276 3988 16216288 0% /var
tmpfs 16220276 852 16219424 0% /run
tmpfs 16220276 0 16220276 0% /media
tmpfs 262144 175032 87112 67% /userdata
The script /etc/init.d/S11share discover the correct partition : /dev/sda2
It is here: but /userdata is in RAM instead of /dev/sda2
Number Start (sector) End (sector) Size Name
1 2048 12603391 6153M vfat
2 12603392 3907027119 1857G userdata