1.4 Now, you can proceed to install another Linux OS using Calamares Linux OS installer ‘USB/microSD Bootable Live Linux OS’ (small usually 4to8GB) on your target disk, ‘USB Flash Target’ (say 64GB). How to do this? Boot into the working system of bootable live linux OS OpenMandriva, Manjaro, Parrot, Q4OS, Kubuntu, or Debian Gnome Live Calamares installer ‘USB/microSD Bootable Live Linux OS’ (small usually 4to8GB) (see Note 1 and Note 2 on how to achieve this). In Parrot 7.1 a lot of the problems with Parrot 7.0 are fixed. So doing the installation now, its now much simpler (without much Terminal typing) thanks to the fixes by Parrot Team! :) Now start Calamares Installer icon and use ‘Replace’ option to install the second linux OS in the ‘free space’ created by ‘lvreduce’ on the target disk. In this demo specifically, target disk shown is ‘USB Flash Target’ (say 64GB).