[TCDNV]

Heartig,

I think you are on to something!

tcd@tcd-yjl:~$ mount | grep Kindle
/dev/sdb on /media/tcd/Kindle type vfat (rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask= 0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,showexec,utf8,flush,errors=remou nt-ro,uhelper=udisks2)

I do not have a sub directory in /media called "demo". When I run "tcd@tcd-yjl:~$ df -h /media/tcd/Kindle"
Filesystem Size Used Avail Use% Mounted on
/dev/sdb 6.3G 572M 5.7G 9% /media/tcd/Kindle

"tcd@tcd-yjl:~$ ls -al /media/tcd/Kindle"
total 10276
drwxr-xr-x 9 tcd tcd 8192 Dec 31 1969 .
drwxr-x---+ 3 root root 4096 Oct 23 18:24 ..
drwxr-xr-x 5 tcd tcd 8192 Jun 13 2021 .active_content_sandbox
drwxr-xr-x 2 tcd tcd 40960 Oct 22 20:00 amazon-cover-bug
drwxr-xr-x 2 tcd tcd 8192 Jul 31 11:03 audible
drwxr-xr-x 118 tcd tcd 16384 Oct 21 15:27 documents
-rw-r--r-- 1 tcd tcd 298 Oct 22 19:42 driveinfo.bkup-calibre
-rw-r--r-- 1 tcd tcd 264 Oct 23 11:40 driveinfo.calibre
-rw-r--r-- 1 tcd tcd 298 Oct 22 19:42 driveinfo.up-calibre
drwxr-xr-x 2 tcd tcd 8192 May 9 2021 fonts
-rw-r--r-- 1 tcd tcd 132470 Aug 20 15:20 kindle_collections_path_cache.calibre
-rw-r--r-- 1 tcd tcd 10241195 Oct 23 11:40 metadata.calibre
drwxr-xr-x 19 tcd tcd 8192 Oct 23 08:54 system
drwxr-xr-x 4 tcd tcd 8192 Jul 11 2021 .Trash-1000

Unfortunately this has now progressed beyond my understanding. Can you tell me anything from these results?

I have also noticed that the /media/tcd directory is empty until I mount the kindle. Then is seems to id the Kindls as a USB:
Please see the attached screen clip.

Thanks VERY Much for all of your help!
Tom
PS: I would swear that I have used Calibre since I upgraded to Linux Mint, Mate 20.x. However I can't account for the sub directory "tcd" in the "media" sub directory.
t