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Bios

Bios

Bios:- Locating the BIOS chip on the system board is easy. it is usually rectangular in shape and generally features the manufacturer’s name as a label on the chip. Some of the popular manufacturers are AMI, AWARD, and IBM. The Basic Input Output System (BIOS) is the low-level program code that allows all the system devices to communicate with one another. This low-level program code is stored in the BIOS chip on the motherboard. The BIOS chip is a ROM (read only memory) chip, which means that you can read information from the chip, but you cannot write to the chip under normal circumstances. Today’s implementation of BIOS chips is EEPROM (Electrically Erasable Programmable ROM), which means that you can get special software from the manufacturer of the Basic Input Output System to write to the chip.

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Bios

Why would you want to erase the Bios

 Suppose, for example, that your Basic Input Output System is programmed to support a hard disk up to 2GB in size, but that you want to install a new, larger hard disk instead. What can you do about it? You can contact the BIOS manufacturer and get an update for your Basic Input Output System chip, which is usually a software program 2 GB and provides instructions for dealing with them. But before new instructions can be written, the old instructions need to be erased.

 The BIOS chip also contains code that controls today (in the past, you generally had to install a new chip). Running the software program writes new instructions to the Basic Input Output System to make it aware that there are hard disks bigger than the boot process for your system. It contains code that will perform a power on self test (POST), which means that the computer goes through a number of tests, checking itself out and making sure that it is okay. Once it has made it past the POST, the BIOS then locates a bootable partition and calls on the master boot record, which will load an operating system.

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