Thai Computer

Today’s PC firmware falls into two categories: the traditional BIOS (Basic Input-Output System), and a newer kind called EFI (Extensible Firmware Interface). EFI is much more capable than the old BIOS routines, which are still mired in the 16-bit world. On the Windows PC side, most systems still use BIOS, while servers generally use EFI. Apple MacBooks, MacBook Pros, iMacs, and Mac Pros use EFI as well. Earlier Intel-based Macs use a firmware architecture built around the SMC (system management controller); but in recent Macs, EFI has superseded that arrangement.

Current PCs typically permit updating through the BIOS setup screen. Copy the BIOS update file to a USB flash memory stick, and then plug the USB stick into the system that you want to update. When you start up the system, press a key that launches the BIOS update application. Alternatively, press a keyboard key (usually Delete, but in some instances another key such as F2 or F10) to enter the BIOS setup program.

At this point, you’ll need to navigate to the device that contains the firmware update. To do this (typically), select the file name and press Enter to launch the update process.

Updating the BIOS from an executable file is even easier. All Intel-built motherboards are updatable through a Windows-based application. Some other motherboard makers make this feature available, too, in which case you download the BIOS update app and launch it from the desktop.

A few motherboard makers include apps for updating the BIOS over the Internet. If the prospect of a wonky Internet connection failing in mid-update makes you nervous, don’t worry: Usually the site will download the entire update before the update process starts.

Laptop and desktop systems with much older motherboards may require you to start up from a bootable floppy disk containing the BIOS update. The update may start automatically when you boot, or you may need to type a command at the command prompt; for details, print out the readme file for the update before you boot from the floppy.

To update a Mac, simply download the appropriate firmware update for you system and launch it from the Finder. The update will take a few minutes, and you must ensure uninterrupted power during that time.