According to Bart Silverstrim:
> Warm boots basically just cycle the computer to restart the OS.  It's 
> just restarting it, and power to the components has been maintained the 
> whole time so as far as the computer hardware is concerned nothing 
> really happened, just a chunk of memory access and the processor mode 
> getting kicked around a bit.

It's been a long time, but it seems to me the byte at
absolute address 0x412 (labelled MFG_TST in the old ibm bios listing)
determines whether the bios does a full POST or not.  If that value
is nulled out before the reboot, I think it will do a full POST.

Rich

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