3.4 Boot Options Flashcards
What is the function of BIOS?
Initializes hardware, manages data flow, and conducts the Power-On Self-Test (POST).
Where are BIOS settings stored?
In CMOS, which is powered by a battery.
What systems are supported by BIOS?
Only 32-bit systems and older storage partition formats like MBR.
What are the advantages of UEFI over BIOS?
Supports 64-bit systems, large storage devices, faster boot times, enhanced security, and advanced diagnostics.
What is stored in CMOS memory?
System settings, including boot order and hardware configurations.
What happens if the CMOS battery fails?
System time and saved BIOS settings are lost.
What partitioning format does UEFI support?
GPT (GUID Partition Table) for modern storage devices.
What is the role of POST during the boot process?
It diagnoses essential hardware and issues error codes if hardware fails.
What is a bootloader?
Software that loads the operating system after BIOS/UEFI initializes the hardware.
How can you prevent unauthorized booting in BIOS/UEFI?
Configure the boot order and disable USB/optical boot options.
What is Secure Boot in UEFI?
A feature that protects against malicious operating systems by verifying the OS signature.
What should you do before flashing BIOS/UEFI?
Backup current configurations and ensure you have the correct firmware file.
What is the process for updating BIOS/UEFI?
Download firmware, place it on a USB drive, reboot into BIOS/UEFI, and follow the manufacturer’s instructions.
What types of boot devices can be configured in BIOS/UEFI?
Hard drives, SSDs, optical drives, USB devices, and PXE for network booting.
How often should a CMOS battery be replaced?
Every 3-10 years, depending on the system’s usage and battery type.
What are some hardware options configurable in BIOS/UEFI?
Fan speeds, virtualization, and clock speeds.
Why is it important to prioritize internal storage in the boot order?
To reduce the risk of unauthorized access to the system.
