- Fixing 'Umount Target is Busy' Error in Linux
	- https://linuxhandbook.com/umount-target-busy/#:~:text=this%20problem%20first.-,The%20reason%20behind%20Umount%20target%20is%20busy,t%20allow%20you%20to%20unmount.
	- ``sudo lsof /mnt/ext-fast``
		- samba is the culprit
	- `` sudo service smbd stop``