How to Configure a Computer to Start From the CD-ROM Drive

Configuring the CD-ROM drive allows the inserted disc to boot in place of the main operating system.

Generally, a computer loads all information from the default hard disk installed, as this storage unit contains the computer's main operating system. However, if you need to reinstall all system files, your computer must often be configured to read primarily from your CD-ROM drive. This also applies to situations in which a secondary operating system needs to load, such as a bootable Linux version. Using the computer's main configuration utility, you can assign the optical disc unit as the primary source to boot from.

Instructions

1. Turn on or reboot your computer. During the initial hardware inspection (before the operating system logo is shown) press the appropriate keyboard key to enter the system BIOS. Such key is generally noted at the bottom of the screen, and is typically "F1," "F2" or "Delete."

2. Use the arrow keys to navigate to the "Boot Sequence" options, typically found within the BIOS' "Advanced Settings" section. The "Boot Sequence" option is responsible for loading each storage device in the order you configure it.

3. Read the BIOS' on-screen instructions and change the boot sequence order; such options are generally toggled by pressing "Enter" or by using the "Page Up" and "Page Down" keys. These entries vary between computers, but are typically presented as "First Boot Device," Second Boot Device" and so on.

4. Set the computer's "CD-ROM drive" entry as the primary boot device option. Press "F10" to save and exit the BIOS screen, effectively assigning your optical drive as the first source to boot from.

References

• Computer Hope: How to Enter the BIOS or CMOS Setup