If when you boot Windows 11/10, you see Non-System disk or disk error, Replace and strike any key when ready on a black screen, this post will help you.

I got a Non-System Disk or Disk Error when I booted up my 2 year old Compaq notebook. After restarting about 50 times over the span of half an hour, Windows eventually started successfully.

Fix MBR2GPT disk layout validation failed, cannot find OS partition, non system disk, cannot install new boot files, EFI system partition errors in Windows 11/10.

Just finishing up with a brand new fresh Windows XP Professional installation. Made a nice SP3 slipstream disc just for the occasion. The originial disc is the RTM distributed with the Go Pro ...