Extending cdboot with options "Press any key to boot from CD" prompt

John Baldwin jhb at FreeBSD.org
Thu Aug 19 07:53:14 PDT 2004

On Thursday 19 August 2004 10:08 am, Maxim Sobolev wrote:
> Hi,
> Please review/comment on attached patch, which extends cdboot with
> "Press any key to boot from CD" prompt inspired by Windows installation
> CDs. IMHO this feature is quite useful for installation CDs, and
> probably for other interactive one-shot CDs, to prevent machine from
> booting off CD again after work is complete. If there is no objections,
> I'd like to request repo copy from cdboot.s into cdboot.S and then
> commit this change. My plan is to keep this feature turned off by
> default, and provide make(1) knob to turn it one if necessary.
> Thanks!
> -Maxim

Only thing I would change is to not use suffixes when they aren't necessary 
since that is the style of the rest of the file.  That is, use 'xor %ah,%ah' 
rather than 'xorb %ah,%ah'.  as(1) doesn't need them and the code is easier 
to read when the mnemnomics are less jagged.  Also, if you wanted to get extra 
cute you would output a '.' each second during the countdown like Windows 
does. :)

John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org

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