I wanted to have an ntfs partition mounted at startup, so I used this solution to mount it automatically. (Using a program to set the automatic mounting: "Storage Device Manager" -
At a certain point I wanted this for an external drive (fat32) that is most of the time connected to the computer, which was not usually mounted when the computer started.
All went well until I noticed that in Thunar it was not possible to create new folder (or file) - the option was greyed out - on the external drive (while on the ntfs partition all was well):
I have also noticed that the use of the "Storage Device Manager" in the way presented by the linked answer had changed the mount point of the drives involved: before, external drive's point had been
/media/cipricus/SAMSUNG/, now it is
/media/sdb1/; the ntfs drive had the mount point
/media/cipricus/3060-0887/ and now it is
/media/sda5/. (But, as specified, there is no problem with the ntfs partition.)
Uninstalling the program and trying to go back to the older situation didn't work, the partition and the external drive continued to mount at the new mount points.
UPDATE: I was able to revert to the old mount points by using the same program, but this did not solve the issue with the external drive. Even worse, I had to un-check the options for mounting at boot for both drives involved for the boot was stopped with an error message that mounting them was not possible.
What I want is to find a way to go back to the situation from before installing the program and making those settings in the first place.
(A second external drive, for which I didn't used "Storage Device Manager" to make it mount at startup, keeps mounting the usual way,
/media/cipricus/USB-HDD/, and I can create folders on that one.)