Boot Process Flashcards
1
Q
Explain the Boot Process
A
- The power button is pressed = sends power to the motherboard and other components
- The computer performs a power on self test (POST).
- The computer displays a splash screen of the manufacturer’s logo, or alternatively text-base specifications of the computer.
- The BIOS access the boot disk, which is typically the same hard disk drive (HDD) or solid-state drive (SSD) that contains the operating system (OS).
- The BIOS loads the bootstrap loader from ROM into the random access memory (RAM). The bootstrap loader is a small program which is used to search for and launch the computer’s operating system.
- The BIOS then passes on the work to the boot loader and beings launching the OS.
Once the boot loader has finished, the operating system takes control of the computer, which is now ready for use.
If it doesn’t work we have the Power on Self Test
2
Q
Types of Boot Processes
A
- Cold: Turned on after being switched off, will clear computers memory
- Warm: restarted via operating system, due to system crash. Usually to install software that needs to alter file that cant be changed while being used. Wont clear computer memory
3
Q
What is part of the BIOS?
A
- Inclusion:
- Instructions on how to work basic hardware
- Includes POST test
- Operating system has boot files –> show how it should act during boot system –> locate, load, and initialize
4
Q
What are the functions of the BIOS?
A
- POST
- make sure no errors on hardware
- Bootstrap Loader
- Find operating system, if a capable one is found BIOS gives control to it
- BIOS Drivers
- Low-level drivers that give the computer basic operational control over your computer’s hardware.
- BIOS Setup or CMOS Setup - Configuration program that allows you to configure hardware settings including system settings, such as date, time, and computer passwords.
5
Q
What is the BIOS?
A
- Short for basic input/output
- ROM chip –> allows access and set up of computer on most basic level
