For some reason trying to reformat this Kingston thumb drive isn't working.
I've launched "Disks" three times and get an error:
I've also tried using the lsof cmd to find the pid and used the kill cmd. The kill cmd terminated it however; the device is still busy.
Umount is not installed and APT can't locate the pkg--
Also, the application that came with my LM 21.1 Cinnamon installation "USB Formatter" returns an error as well and while the GUI of the application glitches, jumps and flickers.

Launching the Gparted application the device / Kingston drive won't umount and that cmd isn't installed--
Would a Ubuntu or .deb pkg work to manully download the umount cmd since APT can't find it?
I've launched "Disks" three times and get an error:
I've also tried using the lsof cmd to find the pid and used the kill cmd. The kill cmd terminated it however; the device is still busy.
Code:
lsof: WARNING: can't stat() fuse.gvfsd-fuse file system /run/user/1000/gvfs
Output information may be incomplete.
lsof: WARNING: can't stat() fuse.portal file system /run/user/1000/doc
Output information may be incomplete.
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
xdg-docum 2291 cora 14u REG 8,33 7088644426 13 /media/cora/5f00bb7e-6dd0-4428-91c2-9d5200951a6d/20230318 Slack.sdb4.img.gz
Alex: sudo kill -2291 [PID]
Terminated
Alex: sudo umount /dev/sdc1
umount: /media/cora/5f00bb7e-6dd0-4428-91c2-9d5200951a6d: target is busy.
Alex: sudo unmount /dev/sdc1
sudo: unmount: command not found
Alex: dpkg -L unmount
dpkg-query: package 'unmount' is not installed
Use dpkg --contents (= dpkg-deb --contents) to list archive files contents.
Alex: sudo apt install unmount
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package unmount
Alex: umount /dev/sdc1
Umount is not installed and APT can't locate the pkg--
Also, the application that came with my LM 21.1 Cinnamon installation "USB Formatter" returns an error as well and while the GUI of the application glitches, jumps and flickers.

Launching the Gparted application the device / Kingston drive won't umount and that cmd isn't installed--
Code:
lex: sudo apt install umount
[sudo] password for alex:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package umount
Alex:
Would a Ubuntu or .deb pkg work to manully download the umount cmd since APT can't find it?
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