This is a very timely discussion, I am just doing some long overdue
housekeeping, and after consulting Eugene's words of wisdom from
ebook.vecsl, I added (device='DISC') to my %altfiles. However it seems that
this is unnecessary, 'cos attempting to move a file off ldev1 with
device='$SYSTEM_MASTER' give the following error ...

-----Altering TT44.PUB.SYS
Error: Can't move system bootfile off DEV=$SYSTEM_MASTER.

Tony Knowles     [log in to unmask]
                 [log in to unmask]

----------
> From: Paul Taffel <[log in to unmask]>
> To: [log in to unmask]
> Subject: MPEX %ALTFILE and LDEV 1
> Date: Tuesday, 30 September 1997 07:18
>
> > Original Question - Why does the operating system allow me to move
files off
> > of LDEV1 that are needed to boot and start the system?
>
> -----------
>
>   Before y'all rush to judgment and blame MPEX for allowing
PERFLOG.MPEXL.SYS
>   to be moved off of LDEV 1, please note the following:
>
>   1) MPEX %ALTFILE will *NOT* allow you to move files off LDEV 1, if
their
>      volume restrictions (as reported by MPEX's %LISTF,-3) contains the
string
>      $SYSTEM_MASTER.  This volume restriction is also visible using the
CI's
>      :LISTF,-1 command.  MPEX has enforced this restriction for at least
the
>      last four years.
>
>   2) On my system, PERFLOG.MPEXL.SYS is *NOT* restricted to LDEV 1.
Likewise
>      for the files [log in to unmask]
>
>   So, the question is: why does START require these files to be located
on
>   LDEV 1, if the file labels don't contain this restriction?
>
>
>   Paul Taffel
>   Quest Software