Originally Posted by Bill_Castner

Because the BIOS supports an F11 function key to access Diagnostics at boot, it is looking for the now gone Diagnostic Partition for the drive.

If someone reformatted the disk without preserving the Diagnostic Partition, this is not an easy error to recover from. I would treat it as harmless and ignore it. It is truely harmless, just annoying at boot.

If you choose to re-establish the Diagnostic Partition I must warn you it is not an activity for less than the very skilled and the brave.

Instructions can be found in this discussion: http://hardware.mcse.ms/message161744.html

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