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Learn more about BIOS


Category: Tuning your PC

If you've ever wondered about the process that takes place when you power on your computer or if you need more information about updating your BIOS, you can learn more by reading this article.

  The first software run by your PC when you first power it on is the BIOS. BIOS is an acronym for Basic Input/Output system and was first introduced by IBM, along with the first PCs.

  It is stored on a chip, integrated on your motherboard. Initially, this chip was a ROM memory, but it has now been replaced by EEPROM memory (also called flash ROM), which makes it easier to replace or update the software.

  What it does

  Older operating systems relied on BIOS to carry on input/output tasks.

  Currently, BIOS mainly provides the initial hardware setup and, once it was started, the operating system doesn't have to rely on it for other tasks.

  When the computer is turned on, information from the harddisk can't be accessed directly by the CPU, so BIOS provides the instructions necesary to load the operating system. It also does a POwer-On Self Test(POST), which verifies the system memory, initialises system buses and devices, identifies and selects devices available for booting. Finally, it takes care of any commands needed for the operating system to start.

  When you need to update it

  The process of updating or replacing your BIOS is called flashing.

   You need to update your BIOS if you want to use new hardware products that aren't supported by the old version or, sometimes, even new software products need an updated BIOS. Also, updating your BIOS can improve your computer's performances, for example by providing new settings for CPU frequency or RAM memory.

  Information you need before trying an update

  To update your BIOS, you need to download a BIOS image, which will be flashed over the old one.

   Before you attempt flashing your BIOS memory, you should find out your BIOS version and motherboard model, which will make it easier to find the right image for your system. Most of the time, you will find a new version available on the manufacturer's website.

   There are many ways to identify the chipset of your motherboard. If you know your bios ID(this ID is shown on your screen when you start your PC, in the bottom left corner), you can check www.wimsbios.com to find out the manufacturer of your motherboard.This is how to decode the id, in the case of an award BIOS: the first 5 characters identify the chipset, the next 2 the manufacturer, the rest being other references.

   Other ways to find information about your BIOS are provided by different applications.

BIOS Wizard

   You can download such applications from the internet, for example BIOS Wizard. Other applications are provided by motherboard manufacturers, along with different drivers or even applications that will help you flash the memory.

Posted by: Quarc on March 18, 2006 at 14:34.

» Comments

this article was pretty knowledgeable . i want to learn more about bios.plz send me more article but in detail.

Posted by samson on September 6, 2011 at 04:36 AM.

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