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BIOS/UEFI (Encryption/Security (TPM (Part of BIOS, Adds cryptographic…
BIOS/UEFI
Encryption/Security
BIOS/User Password restricts system start
TPM
Part of BIOS
Adds cryptographic functions
Supervisor Password restricts BIOS changes
Lojack (for Laptops)
Secure Boot
Digitally sign known/good software
Software won't run without signature
Used to start computer
Init CPU and memory
Performs POST
Basic hardware check
Looks for boot loader to start OS
UEFI
Designed to replace legacy BIOS
A defined standard for manufacturers to create a BIOS based on specific hardware
Advantages over traditional BIOS
Boot from large GPT disks - > 2.2 TB
Inc. pre-boot environment
Has own shell, drivers & apps
Internet, backup, remote diagnostics
Memory
Non-volatile
Stored in CMOS (Older)
Complementary Metal-Oxide Semiconductor
Needed power source to retain config
Used battery
Stored in flash memory(newer)
Legacy BIOS
How older OS's talked to the hardware
Limited hardware support
No support for modern network, video or storage devices
Firmware
A separate chip on the motherboard