Install 9mount by entering the following commands in the terminal:
sudo apt update sudo apt install 9mount
plan9 filesystem (v9fs) user mount utilities
9mount is a set of SUID mounting tools for use with v9fs to help cope with linux's poor mount support. . The tools offer a level of security - 9mount will only let you mount over non-sticky directories you have write access to, and 9umount will only let you unmount 9p partitions that you mounted yourself.