UEFI vs Legacy BIOS Boot | GPT vs MBR (DOS) | Explained

The benefits to UEFI is you get advanced graphics for like, let's say your bootloader wants to do a fancy background and have icons for each one of your boot drives.

You can easily set that up in a UEFI.

And also there's greater support for large boot drives.

If you have over two terabytes that you wanna boot directly from, uh uefi is what you'll be using now in that same vein you'll probably want to use GPT.

And what that means is that's the partition table.

So when you first plug in your drive, you'll get a prompt that says, hey, do you want GPT or MBR? Sometimes it's DOS and Linux.

MBR is kind of how Windows refers to it.

But you'll get those prompts.

And if it's a large drive, it needs to be GPT.

Otherwise, the largest partition you can make is two terabytes.

So very important to know when you're first getting into this.

If you do a GPT drive, you're probably going to want to use UEFI.

And to set that up, you need to make sure your BIOS settings are on point and make sure that you go through and make sure UEFI boot is enabled.

You want to disable legacy boot and disable all legacy boot options that go with it.

in some motherboards, you're literally disabling three or four options before you switch completely over to UEFI.

Again, mileage will vary based on the computer.

But with those two concepts, that's a UEFI boot just in a broad, quick nutshell.

But that's the why you'd want to do that.

But I want to tell you it is far more difficult to set up in comparison to legacy boot, which I'm about to get into.