EFI system partition

In this video, I go over the differences between UEFI and Legacy Boot.

I wanted to preface this video that this is targeted towards the general population.

So if you're just getting into it and you don't understand what these are, I'm about to lay them out so you have a better understanding.

So it's best if you stick to these guidelines, you'll have far less headaches by doing this.

Just know if you do need something else as far as an advanced setup, it is possible, but far more difficult.

Okay, with that out of the way, let's jump right in here and cover what is UEFI.

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.

Advice now with how big the Linux kernel is, is two gigs.

And for the EFI will be 1G.

Fedora specifically wants the EFI being in a subfolder of boot, with the BN1 gig and boot being 2 gigs, which is where all the kernels will reside.

I think, honestly, EFI BN1 gigs bloated, but honestly, storage, there's just so much of it these days, I'm just like, eh, it'll be fine.

But this is how Fedora sets it up automatically if you didn't manually do it.

And then finally, what we're doing is just the root partition.

So now we have a very clean setup.

Home folder's not being touched or reformatted.

UEFI does something structurally different.

It reads boot entries out of NVRAM and it launches EFI applications, actual OFI files stored on the EFI system partition.

It doesn't execute MBR boot code at all.

And the single capability that unlocks everything downstream is that it can read a file system natively.

Roles.

Firmware reads NVRAM and launches EFI applications.

The EFI system partition is FAT-formatted and holds the bootloaders and often the kernels.

The bootloader selects and loads.