/etc/fstab contains all the necessary information to to automate the process of mounting partitions.
After editing the /etc/fstab file you would normally have to reboot the Linux system.
In this article I will provide you simple way which will remount all the partitions from your /etc/fstab file without restarting the system.
Remount /etc/fstab Without Reboot
Run the below command as root to remount the partitions:
# mount -a
This simple command causes all filesystems mentioned in /etc/fstab to be remounted, except the partitions with noauto option.