Windows Setup: Installing using the MBR or GPT partition style

https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/windows-setup-installing-using-the-mbr-or-gpt-partition-style

In general, when you install Windows 10, you should install it under UEFI mode to get additional features. Other than making the boot up faster, it also enables multi boot with other operating systems such as Linux. Each OS needs its own partition. With GPT disk, you can get more than 4 primary partitions. Moreover, given that ChromeOS is all the rage these days, an existing UEFI Windows is needed if you want to dual boot with Neverware's wonderful CloudReady ChromeOS that you can install on any old PC for free. Granted, if the PC is too old, its BIOS cannot run UEFI anyway. In short, if your old computer's BIOS support UEFI and can run Windows Vista or later, you can dual boot it with CloudReady ChromeOS.