Udiskie has failed on me for whatever reason (some time over the last couple of months - currently I'm not using USB externals all that much). I use Artix these days, but that doesn't make any difference to what I'm presenting here, as Artix is just Arch without systemd.
Anyway, to topic: I've created a bash/python script called pm.sh that uses pmount & lsblk -f , to make it as painless & fast as possible to manually mount externals.
I'm pretty happy with it, as even if udiskie was currently working, I'd still remove it from my system (as I already have).
Anyway, for anyone interested (if nothing else it is an easy way to un/mount externals when the more complex systems fail on us), the wiki page that incorporates the script can be found here:
I've writen another bash/python script (pum.sh) & added it to the wiki page. The new script uses pumount to unmount the partition that you already pmounted via the existing script & then delestes the /media/sd?? directory.
Is all you need to unmount - no sudo required, but /media IS required.