Practice Quiz

CompTIA A+ 220-802

Category - 802: Operating Systems

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David is getting an error message on his screen that reads "Non-system disk or disk error.” How would you start troubleshooting this issue?
  1. Look for the boot sector in an operating system.
  2. Dump out the virtual memory.
  3. Check if the keyboard is plugged in.
  4. Re-install the operating system.
Explanation
Answer: A - The most likely cause of this error message is a missing operating system or a failure to locate the boot sector in an operating system. You should look for the boot sector in the operating system.

Key Takeaway: When the computer fails to locate a boot sector with an operating system installed on any of its disks, a missing operating system is the most likely cause.
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