On the machine running Ubuntu, I wanted to mount my Samsung T5 ssd. After I plugged it in, I could not see it in the command line in /mnt or /media/vladimir/anastasia. When I checked the disk utility program to try and mount it manually, I got an error which Error mounting /dev/sdc1 at /media/vladimir/anastasia: unknown file system ‘exfat’ said the system wasn't able to mount an exfat drive. After reading about it, I found that the exfat file system is not installed by default on Ubuntu.

exFAT as it turns out is also proprietery and patented by Microsoft. Hence, we need to fetch it as a package from the universe repository on Ubuntu. The free FUSE exFAT module and tools provide a full-featured exFAT file system implementation for Unix-like systems. On my machine, the universe repository was enabled by default, you can run sudo apt-add-repository universe incase you aren't sure if it was enabled or not. Once done, you can then run sudo apt update && sudo apt install exfat-fuse exfat-utils.

After installation, you can now mount the drive without having to unplug it from the machine.