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Exams220-802Questions#186
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220-802 · Question #186

220-802 Question #186: Real Exam Question with Answer & Explanation

The correct answer is B: Change BIOS options to remove USB device from the boot order.. The BIOS boot order determines which devices are checked for a bootable OS. When the external USB drive is connected and listed before the internal drive in the boot order, the BIOS attempts to boot from it. Since the external drive has no bootable OS, it returns a 'boot sector m

Question

A user has an external hard drive which they forget to unplug before booting their machine. Each time this happens, an error shows on the screen which states "Boot sector missing ?reboot to try again." Which of the following would be the BEST way to resolve this?

Options

  • AChange BIOS options to remove floppy drive from the boot order.
  • BChange BIOS options to remove USB device from the boot order.
  • CChange BIOS options to remove CD drive from the boot order.
  • DSet the SATA setting in BIOS to AHCI from IDE.

Explanation

The BIOS boot order determines which devices are checked for a bootable OS. When the external USB drive is connected and listed before the internal drive in the boot order, the BIOS attempts to boot from it. Since the external drive has no bootable OS, it returns a 'boot sector missing' error. The permanent fix is to remove USB devices from the boot order entirely so the system always boots from the internal drive regardless of what USB devices are attached. Removing the floppy or CD drive from boot order would not address a USB-connected external drive. Changing the SATA mode to AHCI is unrelated to this issue.

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