Mount Commands

Mount Filesystem

# When FS is known
mount -t ext4 <filesystem-to-mount> <mount-location>
 
# When FS is not known
mount <filesystem-to-mount> <mount-location>
 
# Mount an iso file
mount -o loop <iso-file> <mount-location>
 
# Remount an FS with Read and Write Permission
mount -o remount,rw <mount-location>

View Mounted Devices

mount
cat /etc/mtab
cat /proc/mounts

Unmount Filesystem

Filesystem should not be in use when its being unmounted

umount <filesystem-to-mount>
umount <mount-destination>
 
# When no operation is being performed by still can't unmount FS
umount -l <mount-destination>

The mount can be made permanent by adding the mount information in /etc/fstab

# <device-to-mount> <mount-point> <filesystem> <mount-options> <dump (1) / no-dump (0)> <fs-check>
/dev/sdb1 /mnt/shared ext4 defaults 0 2
UUID=80b496fa-ce2d-4dcf-9afc-bcaa731a67f1 /mnt/example ext4 defaults 0 2

1st Field: Specify the FS to mount. The UUID of the drive is the preferred method

# View the UUID of all drives
sudo blkid
 
# View all the mounted devices on the system
lsblk
 
# View the UUID of the FS
lsblk -fs <path-to-fs>

2nd Field: When mounting an “swap partition” the <mount-point> should be none
5th Field: The dump option is not generally used and should in most cases be set to 0
6th Field: When mounting an root FS use 1 else use 2. 0 is default and means fschk is not performed on the FS