Booting a computer from a CD: 5 steps (with pictures)

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Booting a computer from a CD: 5 steps (with pictures)
Booting a computer from a CD: 5 steps (with pictures)
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Sometimes you need to boot from a CD to repair or upgrade your computer. The problem is that most computers are set up to boot from the hard drive, without trying to boot from a CD. Getting your computer to do this can be complicated, so follow these steps to make sure you boot correctly.

Steps

Method 1 of 2: Booting a PC

Uninstall the Grub Bootloader from a Dual Boot XP System With an XP CD Step 4

Step 1. Insert the drive

The disc must be a bootable CD or DVD, such as your Windows installation disc or a diagnostic disc.

Change the Settings on a Windows XP Computer Without Being Detected Step 11

Step 2. Restart your computer

Before you can boot from a CD or DVD, make sure the CD/DVD drive is set as the primary boot device.

  • When you see the manufacturer's logo, press the indicated button to enter the BIOS menu. The key varies by manufacturer, usually F2, F10, F12 or Del. The key you need to press is shown below the logo, or on the side of the screen.

    Fix Boot.Ini Step 3
  • Once in the BIOS menu, select the Boot submenu. All manufacturers use different BIOS layouts, so look for a variation of the name Boot.

    Reflash BIOS Step 4
  • In the Boot menu, use the arrow keys to move to the first device, and turn it into the CD/DVD player. Each BIOS menu has a different way of displaying your drive. Some sort it by manufacturer, others list it as Optical Drive, and others just show CD/DVD.

    Repair Boot Errors Step 2
  • Once your CD/DVD drive is set as the primary boot device, save your changes and close the menu. Now your computer will restart.

    Install Microsoft Windows Vista/ Windows 7 using a USB 2.0 Flash Drive Step 9
Fix Boot.Ini Step 4

Step 3. Boot from the CD

If the manufacturer's logo appears, you'll probably be prompted to press a key to boot from the CD. Some boot CDs start automatically.

Method 2 of 2: Booting Mac OS X

Uninstall the Grub Bootloader from a Dual Boot XP System With an XP CD Step 4

Step 1. Insert the drive

The disc must be a bootable CD or DVD, such as your Mac OS X installation DVD. Restart your computer or turn it on.

Boot a Computer from a CD Step 5

Step #2. Hold down the C or Option key

After you hear the startup tune, hold down the Option or C key, depending on what you want to do. The Option key takes you to a menu where you can select which device you want to boot from, including the CD/DVD drive. The C key skips this menu and automatically selects the CD/DVD drive as the boot device.

  • You may have to hold down the key for a while. Wait for the menu to appear or for the startup to begin.

    Boot a Computer from a CD Step 5Bullet1
  • Booting from a CD is slower than booting from the hard drive, so don't be alarmed if loading seems a bit slow.

    Boot a Computer from a CD Step 5Bullet2

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