Re: grub-dumpbios

[Stefan Reinauer <stepan@coresystems.de>]

On 04.05.2009 21:27 Uhr, Robert Millan wrote:
> Hi,
>
> Do we really need to ship a specific utility just to run two commands?
>
>   dd if=/dev/mem of=${output_dir}vbios.bin bs=65536 skip=12 count=1
>   dd if=/dev/mem of=${output_dir}int10.bin bs=4 skip=16 count=1
>
> Sounds like user will need to read some documentation in order to figure
> out what grub-dumpbios is good for, and what to do with those files, so
> why not just document the commands there instead?  (e.g. in the wiki or
> so)
>
>   
As a side note: On many machines dumping the VGA option rom like that
does not produce good option rom images. Many option roms are
self-modifying and the above method only dumps the modified variants of
the ROMs that are normally not good for "POSTing" a graphics card
anymore. They're still good for other purposes though I guess.

Stefan

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