En , Rod Speed va escriu
Timothy Daniels wrote
Antoine Leca wrote

rdisk(N) is the "real" disk number (as assigned by the BIOS - 0x80;
and up to 3 according to MS doc).

You can also think of "rdisk()" as meaning the
"relative disk position", that is, relative to the head of the BIOS's
hard drive boot order.

Yes, that's a interpretation (of course, the original meaning in 1992 was
neither real not relative).


Since the boot order

Bewa that's not the "boot order" (another thing entirely), but the order
among the harddisks (int13h non removable devices).
I guess Rod and you are in a misunderstanding here.


can be adjusted manually by the user via
keyboard input to the BIOS, the hard drive referred to by "rdisk(0)"
can be changed at will.

No it cant.
No it doesnt.
It JUST refers to the physical order.

Rod, some BIOSes allow to freely change the numbers among IDE devices, while
others (most) do not.


Antoine