[Coco] DW3 descriptor info question

[Tim Fadden]

Hi,

I was wondering about  the device descriptor for the /x# devices under 
Nitros9. 

I am thinking that the only time the device information is used, as 
reguards to the geometry is when the disk is formatted. And I do know 
that backup wants the two disks to be the same before it will work. And 
as to imbedded scsi drives, it is ignored all together except to 
calculate the total number of sectors, and cluster size, as the numbers 
are not the actual geometry of the disk any way, and the disk formats 
itself.

Sample:

        dmode /h0

         nam=h0 mgr=RBF ddr=SCSISYS
         hpn=07 hpa=FF5B drv=00 stp=00 typ=80 dns=90 cyl=040C sid=0C
         vfy=01 sct=0021 t0s=0021 ilv=01 sas=10 wpc= ofs= rwc=

When using os9.exe from the toolshed, only the total number of sectors 
is provided, so geometry is not used there.

Now to the question!  When using format with the /X# disks, just which 
values does it look at?
I would think only cyl, sid, sct, and t0s, in order to calculate the 
number of sectors.

Any questions, or input is welcome.

Tim

P.S. How long must a person be on the list before they are not 
considered fly-by-night, and are eligible to answer posts in an attempt 
to help otheres?  ;-)