[capidamonte]

I do that. The system won't let me unmount them once Calibre sees them, anyway. Sometimes it takes a while to properly unmount the drives (using Calibre) from my desktop but not more than 30 seconds or so. If I don't wait, I get scrambled files (sync issues.) Calibre will have indicated that I am unmounted already, though.

Nonetheless, it still leaves folders in /media -- it almost seems like the system is catching it first, then Calibre is making changes but sometimes Calibre doesn't quite catch it in time.

I'm not getting consistent naming on the folders, either. Sometimes they are Jetbook Main Memory, Jetbook Storage Card or multiple variants, and sometimes, as right now, I'm actually getting three disk names: disk, disk-1 and disk-3, which makes zero sense. disk-3 is owned by root for some reason. When Calibre unmounts the disks, disk-3 is left behind.

It's weird and inconsistent.

I just unmounted and remounted after changing disk-3 ownership to my username. This time I got disk and disk-1 and Jetbook Main Memory. disk-1 and Jetbook Main Memory both lead to the Libre's main memory. disk is the storage card. disk-3 is still empty.

Unmounting via Calibre leaves disk-3 and Jetbook Main Memory behind. Remounting produces disk and disk-1, Jetbook Main Memory(1) and Jetbook Storage Card. The old Jetbook Main Memory and disk-3 are still there. So now I have six folders in /media. Unmount: the three Jetbook folders remain behind with disk-3.

My next remount added two more Jetbook folders, but only one disk folder. You can see part of what's happening here. When Calibre finds folders that it left behind, it makes new ones. The disk thing seems to be beyond simple observation -- it's got to be related to whether Calibre is successfully creating its own folders, and the timing of it.

At the moment I have seven folders for the two external disks in the Libre.

I also have two extra entries apiece for /media/disk and /media/disk-1 in my .hal-mtab file, even after a reboot.

Something is up.