1.1 Lets say you boot your computer into a working system of bootable live Ubuntu OS installer i.e. a ‘USB/microSD Bootable Live Linux OS’ (small usually 4to8GB).
-1.1.1: Note1: The ‘USB/microSD Bootable Live Linux OS’ (small usually 4to8GB) can be prepared using Rufus on Windows OS, balenaEtcher on Mac, ‘dd’ command on Terminal, and MKUSB or GnomeDisk on Linux OS from iso files (Desktop version not cloud or server version) of your Linux OS of interest downloaded from the official website of your Linux OS of interest example for Ubuntu OS desktop download it from https://ubuntu.com/download.
-1.1.2: Note2: The BIOS/UEFI Firmware settings can be entered by pressing F1, F2, F6, Del or other appropriate Hot-Key for your computer manufacturer. Then set at ‘Secure boot disabled’, ‘Fast boot disabled’, ‘USB boot enabled’, ‘UEFI enabled’, ‘Boot Priority USB/CD/DVD’, settings that restrict boot to internal computer disk should be disabled like ‘Natural File Guard’ and ‘Device Guard’. Administrative, User and prompt for password on power-on should be kept enabled for security. Now you should be able to boot your Windows Laptop into the ‘USB/microSD Bootable Live Linux OS’ (small usually 4to8GB). For Mac Laptop, ‘Lockdown mode disable’ and just press ‘Option’ key during power-on to boot your Mac Laptop into the ‘USB/microSD Bootable Live Linux OS’ (small usually 4to8GB).
###Source###
This is video 1.1 of article: https://fairwissenschaft.eu/2026/04/installing-two-linuxos-as-multi-boot-scenario-ubuntu-plus-one-parrot/
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Copyright © 2023 onwards Goldy Honorer-Descartes (born Shradha Mukherjee)
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