CompTIA A+ Core 2 (220-1002) — Question 200

A technician has just finished installing a secondary OS on a workstation. After rebooting the computer, the technician receives the following error: No OS found. The technician confirms the boot.ini file is correct.
Which of the following is MOST likely causing this error?

Answer options

• A. The computer has GRUB Legacy installed
• B. Windows Startup services are not running
• C. An incompatible partition is marked as active
• D. An unsupported version of Windows is installed

Correct answer: C

Explanation

The most likely cause of the 'No OS found' error is that an incompatible partition is marked as active, which prevents the system from booting the correct OS. Options A, B, and D do not address the partitioning issue directly; GRUB Legacy may not be the root cause, Windows services being inactive would not lead to this specific error, and having an unsupported version of Windows would typically produce different error messages.