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systems and videos bios shadowed

3K views 2 replies 3 participants last post by  fzabkar 
#1 ·
My Compac persario c500 hard drive show systems and video bios shadowed.how do i fix this or is it fixable?
 
#3 ·
It's not an error, it's a performance feature.

BIOS is stored in EEPROM which is a slow memory device. In order to improve execution time, the BIOS code is copied ("shadowed") to system RAM where it executes much faster. Modern BIOSes are also compressed, which means that the code MUST be unpacked into RAM.
 
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