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A Mac's "BIOS" is not really a BIOS. It is OpenFirmware, which many Mac users find to be better than BIOS. To access OpenFirmware, you must use two hands on the keyboard and the key combination CMD-OPT-O-F.
It's not really clear how much a BIOS costs since they're not marketed to end users but are sold to motherboard manufacturers. A BIOS is essentially a part of a motherboard. A BIOS is likely to be removable on a modern motherboard and technically it could be possible to replace a BIOS if it went bad or if for some reason it was to be upgraded, but for BIOS upgrades usually it is sufficient to flash (reprogram) the existing BIOS.
You need to find out the motherboard manufacturer and the model number; then go to the manufacturer website, look up your motherboard and look for a BIOS download. Make sure you follow the proper procedure recommended by your motherboard manufacturer for flashing the BIOS.
You don't. Users have no direct access to the Apple firmware. Macintoshes do not have a BIOS setup screen
Power-On passwords, Drive Lock passwords, and passwords used to authenticate users.
An operating system is mandatory, unless you like staring at the BIOS post screen all day.
Power-On passwords, Drive Lock passwords, and passwords used to authenticate users.
phoenix bios,ami bios, luwrance bios, award bios,asus bios
The BOIS is the first thing that runs when you turn on your computer. The BIOS tells the processor were to boot the OS kernel from (c:/windows/) and then the OS runs. The BIOS also lets you boot from CDs, change clock time and in some computers lets you overclock the processor (not recommended)
AMI Bios, Award Bios, Pheonix Bios
For most users, no. The BIOS default is to search for floppy drives on boot up. However, if someone has changed those settings, like I always do with mine, then you may need to switch it back on in the BIOS. If you don't have a floppy, or have one but never use it anymore, then switching off the 'floppy seek' option in the BIOS can speed up the boot up process.