Chroot Ubuntu 20.04 – Step-by-step

GNU/Linux Ubuntu 20.04 Chroot Guide

Hi! The Tutorial Shows in Easy Steps How to Properly Chroot Ubuntu 20.04 Focal LTS GNU/Linux Systems with Network Enabled.

Hence, Chrooting in Ubuntu 20.04 consist in Changing the root Directory on a Different Partition from the Boot System.

And Chroot is also defined as the Operation that Changes the Apparent root Directory for the Current Running Process and their Children.

Especially relevant: the Chroot is usually achieved Starting up the System with a Live OS Media.

As a Result you’ll be Able to Operate on the New Root Device pretty like a regularly Started System with Networking.

1. 1. Unmounting Target

   Then Find Out the New Root Target Drive
   First, Login as SuperUser to make easier the Commands execution:

   sudo su

   Or:

   su –

   Then look into the List of the Mounted devices with:

   df -h

   If You can Not to Find it then try Visually with GParted:

   gparted

   Possibly Unmount it with:

   umount /dev/sd[XN]

   Just Replace [XN] with the actual Device’s Identifier.

   How-to Quick-Start with Command Line on Ubuntu Linux

   Command Line Ubuntu QuickStart Guide

   Getting-Started with Terminal on Ubuntu.

2. 2. Mounting Root

   Mount the New Root Target Device
   Firt make a New Directory by:

   mkdir /mnt/newroot

   And then to Mount:

   mount /dev/sd[XN] /mnt/newroot

3. 3. Mounting Pseudoterminal

   Hence Mount the Pseudoterminal Slave
   First, make the Target folder:

   if [ ! -d "/mnt/newroot/dev/pts" ]; then mkdir /mnt/newroot/dev/pts; fi

   And then Mount it with:

   mount -t devpts none /mnt/newroot/dev/pts

Tags: chroot ubuntu, Chroot Ubuntu 20.04, Ubuntu 20.04 Chroot, ubuntu chroot