How do I get to the Bios setup for my macbook?

Read all aboutHow to Enter BIOS Command on a MacBook here

How to Enter BIOS Command on MacBook


Read where's the bios on an intel mac

Where the BIOS on an Intel Mac

How to Get Into the BIOS in Mac Computer


WAtch this youtube video


BIOS settings for MAC OS 10 5 2 for run on PC

Macbook computers don't technically have a "BIOS" setup.

Macs do not have BIOS. They have OpenFirmware.
To access hold down CMD-OPT-O-F during bootup, that is the letter O not zero.
You will get a command prompt 0 >
Do a Google search for OpenFirmware to find out all the commands you can use at the prompt.

Access to the BIOS is not available on Intel-based Apple computers.

There is no BIOS setup key on any Intel Macintoshes. Sorry.

Macs use Intel's Extensible Firmware Interface (EFI) to perform the same job as a BIOS. Intel have been trying to introduce this for years, but thanks to Microsoft dragging their feet, were unable to put it into any production units until Apple switched onto their processors. Therefore there is no BIOS screen on a Mac, as they don't have a BIOS.

so to achive changes you have to Edit your Boot.ini file

When you power up the computer press F2 or "del" or F5 or F12 or TAB key to enter in bios.

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The MacBook systems use Intel's Extensible Firmware Interface (EFI) rather than the traditional Macintosh ROM or PC BIOS.
So, no such thing as going into the BIOS for advanced setup on Intel Macs (like you can on a PC).

Command Button(the one with the apple logo) + Option + F + 0 when it boots

go to bios setup load optimal defaults.
then save.