No , a reboot is not the solution.
I remember now… I had this problem with Thunar before … in Alpine … the solution is documented here
What I need to do is
apt install gvfs
apt install udisks2
gvfs is needed for Thunar to see usb and cdrom devices, and udisks2 is required for Thunar to see unmounted internal disk partitions.
Actually the install of udisks2 is unnecessary … gvfs drags it in.
I Debian, that would be it, but in antiX/dinit, the gvfsd daemon is not started by installing the package, I need to reboot, then I can see
$ ps ax | grep gvfs
2348 ? Sl 0:00 /usr/libexec/gvfsd
2852 ? Sl 0:00 /usr/libexec/gvfs-udisks2-volume-monitor
3171 ? Sl 0:00 /usr/libexec/gvfsd-metadata
3175 ? Sl 0:00 /usr/libexec/gvfsd-trash --spawner :1.7 /org/gtk/gvfs/exec_spaw/0
and Thunar now looks like this
I can now see all my partitons.
but
now when I try and mount one of the partitions it says
polkit is installed , and polkitd is running?
I can mount it with a mount statement, as root, so it really is a permissions issue .