How to Designate a Start-Up Drive

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The C drive is typically the start-up drive; however, you can start up the computer with a different drive, such as another hard drive or a CD-ROM drive. You can designate the start-up drive in the CMOS setup screen. This procedure applies to most PCs.

Things You'll Need

  • CD-ROM Drives
  • Hard Disks
  • Macintosh Computers
  • Computers
  • Turn on the computer.

  • Press and hold the Delete key as soon as the computer starts, to display the CMOS start-up screen.

  • Use the arrow keys to highlight BIOS Features Setup, and press Enter.

  • Press the down arrow to move to the Boot Sequence field.

  • Press Page Up or Page Down to display the desired boot sequence.

  • Press Esc to exit the screen.

  • Highlight Save & Exit Setup, then press Enter. The new boot sequence is saved and the computer restarts.

Tips & Warnings

  • Setup screens vary with different systems, so look in your CMOS setup screens for the boot sequence setting.
  • The first letter in the boot sequence is the first drive that the computer seeks for start-up. If this drive isn't available, the system moves to the next drive in the sequence. The most common boot sequence begins with A, C. If the C drive is unable to start up, then a start-up disk in the A drive will enable the computer to start up.
  • Avoid changing other settings in the CMOS setup unless you're familiar with them. Changing the wrong setting can adversely affect computer performance.
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