Stan wrote,

<<snip>>

>Historical note: it was actually possible, IIRC, to configure an MPE V
>machine such that ldev 1 didn't exist, and the boot disk was ldev 2.
>It sure fouled up programs that assumed ldev 1 should exist, or that
>LUN 1 = LDEV 1.   (LUN = Logical Unit Number, sort of a counter of
>disk ldevs.  You might have ldevs 1, 3, and 5, with LUNs 1, 2, 3)
>
>I haven't tried this with MPE/iX.
>
>
>SS
>

Nope, I don't think so. While ldev 1 was not initialized and added
automatically during a RELOAD on MPE/V like is done on MPE/XL, there
was quite a bit of code in the OS that "assumed" a structure was on
ldev 1. It would actually reference ldev 1 by default, paying no
attention whatsoever to the actual ldev number in the DST, CST, or
label table. The OS just knew it HAD to be there. I recall a time or
two where it wasn't and it caused major problems. I can't remember
off-hand how the file or structure managed to get on a different drive
than ldev 1.

Regards,


--
        --Pete Crosby  ([log in to unmask]  a.k.a. [log in to unmask])

          I loved MPE/V. It was so much more cut-and-dried than MPE/XL.