• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

AsRock Z77 Pro3 - AHCI? UEFI?

Joined
Feb 5, 2011
Messages
41 (0.02/day)
Likes
1
#1
Okay, I have simple question :)
When I'm clicking F8 to watch available devices to start for I got something like this:

AHCI - hard drive
AHCI - DVD drive
UEFI - DVD drive

What is the difference between AHCI and UEFI DVD drive? I heard somewhere that this is related to GPT disk formatting instead of MBR, but which one is better?
I have 1 TB hard drive.
 
Joined
Feb 20, 2008
Messages
4,435 (1.23/day)
Likes
733
Location
where everyone wants to be
System Name Everchanging
Processor Core i7 4790K
Motherboard ASUS ROG Maximus VII Hero
Cooling Custom loop
Memory 4x4GB Corsair Dominator Platinum 2800MHz 11-14-14-35
Video Card(s) 2xEVGA GTX 970 SSC
Storage SSD Main, 7TB backups
Display(s) Samsung 40" 4k UHD
Case Corsair 900D
Audio Device(s) Soundblaster thingy
Power Supply Enermax Revolution 85+ 1050w
Mouse Steel Series Sensi
Keyboard Thermaltake eSports Posiden Z Cherry Blues
Software Windows 10 x64
#2
UEFI is a new standard of bios design, so that would probably be what the BIOS has listed as the first boot option, where ACHI is a mode that SATA controllers run, and that is probably listing drives by order of first to last by port order. Not sure why it would list that way (if my guess is right as to how/why it is listing the drives).