Ubuntu Mount Ext2/Ext3/Ext4 Partition Boot
Hi! The Tutorial shows you Step-by-Step How to Mount a Ext2/Ext3/Ext4 Disk Partition a Ubuntu Linux System Boot/Start-Up.
The fstab file typically lists all available disks and disk partitions, and indicates how they are to be initialized or otherwise integrated into the overall system’s file system.

Open Terminal Window
(Press “Enter” to Execute Commands).Ctrl+Alt+t
Find the Partition UID.
ls -l /dev/disk/by-uuid
Copy the UID Value Associated to the /dev/sdXY Device.
Make the Target Directory.
sudo su -c "mkdir /mnt/[myDisk]"
Edit the fstab File.
sudo su -c "nano /etc/fstab"
Append:
UUID=[1234-5678] /mnt/[myDisk] auto defaults 0 0
Ctrl+Shift+v to Paste the UID Value
Ctrl+x to Save & Exit from nano Editor :)Test if the Setup is Working.
umount /mnt/[myDisk]
The last potentially to Unmount the Partition…
sudo mount -a
ls /mnt/[myDisk]
This should Show up all the Partition Content!