Re: Flash BIOS under linux
H. Peter Anvin (hpa@transmeta.com)
Fri, 2 Apr 1999 03:54:50 -0800 (PST)
> > Just make sure yours really do! It does work, but you get no video,
> > nothing while it does its thing.
>
> The motherboards that I've seen, have a jumper that allows writing to
> the only-boot-floppy-to-reflash part.
>
> When I've had to upgrade my BIOS, the official dos-program said it
> wanted to write to the "dangerous" part, and required me to move the
> jumper.
The jumper usually prohibits writing to all or most of the BIOS flash;
some machines use part of the flash to store configuration data which
is probably what can be touched without it.
The unflashable part is a hardware feature of the EEPROM chip I
believe.
-hpa
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