How To Change An Operating System

Back up your data. If your computer contains data or files that you want to keep, back them up on external storage media such as a CD or DVD disk. Installing a new operating system will erase everything on the hard drive unless you partition it manually.
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Step 4

Gather your Windows driver disks. If you are installing a new Windows based system, make sure you have all of the manufacturer driver disks that came with your PC hardware. For example, many video cards require additional drivers.
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Step 5

Set your BIOS to boot from the optical drive that you will be using to install the new operating system. In most cases, this will be your CD/DVD drive. Refer to your computer owner's manual, if necessary.
How to Install the New Operating System
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Step 1

Load the installation disk into the CD/DVD drive and then restart the computer.
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Step 2

Allow the operating system to format and partition the hard drive with the default settings. If you are familiar with partitioning a hard drive, you can also choose to manually partition the drive.
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Step 3

Enter a user name and password when prompted. It's very important for security purposes that you set up an administrative account.
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Step 4

Select programs and services. Some distributions allow you to choose which software packages will be installed. If you don't feel comfortable selecting packages, accept the defaults.
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Step 5

Select your timezone and language preferences. You may also be prompted to select a keyboard layout.
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Step 6

Wait for the installation to complete, remove the installation disk, and then restart the computer.
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Step 7

Install additional hardware drivers, if prompted and then load your personal data and files into the new operating system.



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