Below you can see a couple of GRUB examples that are themed by Linux distros Ubuntu and Manjaro. That instead of our OS grub will control, create GUI for us, scan drives for installed OSes and then give us a choice which OS we want to use. So we can install GRUB in part of our hard drive and then point MBR or GPT to it. It is responsible for loading and transferring control to the operating system.” by WiKi. Briefly, a boot loader is the first software program that runs when a computer starts. It was derived from GRUB, the GRand Unified Bootloader, which was originally d esigned and implemented by Erich Stefan Boleyn.

Just to say there are a lot of ways to do dual boot, but in this post I will cover just those two. The other way is to use GRUB, which is done in this post. This is not the optimal way, but if you don’t switch between the OSes frequently, maybe this solution can make your life easier because you don’t have to modify or change MBR or GPT. Now, at the boot up of your PC you need to go inside the UEFI or BIOS and just choose the drive to boot from. After install, simply plug back the first drive and you are done. Power of your PC and unplug your first drive and then plug in the second drive and install a second OS on that drive. If you are adding the second drive to your PC for the second OS, you can simply do the next thing. In these two places firmware will find the location of your installed OS and then give control to your OS.īut then how are we dual booting and as always there are a couple of ways (freedom :)). This is a bit too technical but don’t worry you only need to know that there is info where your OS is stored, and PC but need to have this info in order to boot your PC. Now, the firmware searches somewhere to find the entry point for your OS and that information can be found in Master Boot Record MBR for Legacy Boot or in GUID Partition Table (GPT) for UEFI boot. To get more detailed with this we need to know a bit about the boot process, and how does our PC know to start our OS.Īt the beginning PC doesn’t know anything about its hard drives, and the first thing is to perform something that is called Power On Self-Test or POST. Basically If you can install an OS on your machine, you can dual boot it with Another OS that can run on your machine. It can be Windows and Linux, Linux and Linux, Windows and Mac in some cases, and so on.

When we say dual boot we are saying that on our PC and/or laptop there are two Operating Systems installed. So, what is Dual boot Pop OS? What is good to know before we start. Dual Boot Ubuntu and Windows 10 in 2022 What is Dual Boot?

Add windows to grub