One of them can refer to developing and testing applications. Other than this, there are several other reasons to utilize boot managers and, implicitly, multiple operating systems. Thus, you don't have to install it over the one you are already running then reinstalling the old one if you don't find it any reason to keep the new one. If you ever find yourself dying to take a new operating system for a test run without completely switching to it, then you can install it alongside the current OSes on the computer. The thing with this trend amongst advanced users is quite simple to comprehend. Generally, a boot manager allows for every operating system to be installed to a separate partition, thus limiting the chances of potential conflicts.

Therefore, a boot manager is a must for any similar situation. Without a boot manager, the boot sequence chooses the same OS over and over again and boots to it. For instance, one may want to have Windows, a few Linux distributions and even a Mac OS X deployed on the same system. First things first, boot managers resolve the problem that many users interfere with whenever they want to install different OSes on their PC. Grub2Win provides you with a boot manager that allows you to boot from various operating systems every single time you power your computer on.

Grub2Win 2.3.7.1 for apple instal