UEFI or legacy?

[cdarby]

This is my 2nd build and I have a question about whether to use UEFI boot mode or legacy boot mode.

This is what I have

GIGABYTE H370 HD3 Socket 1151/H370/DDR4/S-ATA/ATX Motherboard - Black

Intel BX80684I38100 8th Gen Core i3-8100 Processor

How do I tell which to choose?

 

[trs96]

If your mobo is UEFI capable it's best to install for UEFI booting.

 

[cdarby]

How do I find that out?

 

[Jamesbond007]

How do I find that out?

Current motherboards like the one you have all use UEFI for booting so you should just choose UEFI mode.

 

[BreBo]

How do I find that out?

See BIOS section of https://www.gigabyte.com/Motherboard/H370-HD3-rev-10#sp