> Well, last time I tried to do a setcontroller (under Mach) with 
> a BIOS geommetry from an LBA configured disk (say C/H/S 1024/64/63 vs
> a true geometry of 4096/16/63 (numbers sort of made up here)), the
> controller hung.  So I don't believe we use these numbers for anything.

I presume you mean `INITIALIZE DEVICE PARAMETERS'.  We don't do this
at all when using LBA translation, because the CHS translation mode is
irrelevant in that case.

(You know, if you have questions about the code, you could always ASK
THE PERSON WHO WROTE IT...)