BIOS and UEFI

BIOS and UEFI

1. Similarities and differences between BIOS and UEFI

   • BIOS
     • CMOS
       • The CMOS power supply is a CR2032 battery
       • re-seat the battery to reset any saved changes to the BIOS
       • Remembers configuration settings for the BIOS
         • 16 GBs of DDR4, 2 TB hard drive, 3.1 GHz CPU speed
     • No GUI
     • must run in 16-bit processor mode
   • UEFI
     • GUI
     • CMOS storage method has been replaced with flash memory (also referred to as EEPROM)
     • a tiny operating system that runs on top of the PC’s firmware, and it can do a lot more than a BIOS.
     • runs in 32-bit or 64-bit mode
   • BIOS and UEFI
     • Responsible for finding hardware on your computer.
     • Take pictures of the settings before you make changes to the settings
     • Configure what starts up first with Boot Priority
       • If you're booting an OS from a DVD/Flash drive make those #1
       • The hard drive that contains the OS must be #1
     • Firmware that you can access to make changes to the system.
     • Access with ESC, DEL, F1, F2, F10
     • Flash me if you can't find latest versions of RAM and CPU
     • Save and exit with F10

2. Flash BIOS/UEFI

   • PC will be able to see the latest versions of RAM and CPUs
   • Manufacture'rs website will have the update
   • Unzip the files you download from the manufacturer's website and copy that .CAP file onto a flash drive
     • Connect the flash drive into a USB 3.0 port on the back of your PC
   • DO NOT start a flash during a thunder storm.
     • interrupting the flashing process can cause serious damage to your PC
   • How do you run the update once you have it installed?
     • BIOS\UEFI Advanced mode > tool > Flash utility > flash drive > click on motherboard's name folder > click the .CAP file

3. Configure BIOS/UEFI settings

   • Clocking
     • Path to change speed is Advanced settings > Ai Tweaker > Ai Overclock tuner > manual > Base clock frequency
       • over clocking voids your warranty
       • Lowering speed will reduce a computer's power consumption, increase battery life, and reduce heat emission.
   • Set a password
     • Advanced settings > Main screen > Security > Administrator password
   • Adjust Fan speeds
     • Qfan control -or- Advanced mode > Monitor
   • Adjust time
     • Click on military time

4. BIOS/UEFI Tools

   • Secure Boot
     • Secure automatically loads windows UEFI, this prevents malware and or "unauthorized" operating systems from loading during the system start up process
       • Disable secure boot to use Linux OS
   • TPM \ Key management
     • encrypts everything on the hard drive from the motherboard.