BIOS AND VIRTUAL Machines

Question 1

What does the bios do?

Answer 1

Boots OS

Question 2

What is BIOS

Answer 2

Basic input output system
- Small program that runs before operating system kicks in
- stored in ROM
- basic hardware settings and instruction
- can be updated but rarely
- firm ware

Question 3

What happens when you press the power button on computer?

Answer 3

• Sends hardware reset signal to CPU
• when CPU get the signal it get a jump command to the BIOS
• Once post been passed bios will initialise the computer internals peripherals checks in order of the “boot order”hardrive
• system boots up drive
• from master boot record the bios finds which drive has boot loader

Question 4

What’s POST

Answer 4

Power on self test- checks if everything is where it should be
Once all checks done starts bios

Question 5

What Does POST check for

Answer 5

BIOS not currupted
System chips are ok
Processor is ok
System memory ok
Keyboard present
Video display memory is ok

Question 6

What are virtual machines

Answer 6

Using hardware to run software
Trying to run another operating system in window