[Info-vax] Reconfiguring VMS 6.2 - Shadow set question

[Phillip Helbig---undress to reply]

In article <k679c2$sah$1 at tdi.cu.mi.it>, supervinx <nessuno at libero.it>
writes: 

> Well... I removed the DSA0:-related MOUNT command from the startup file and,
> as you stated, the one-disk system shadow set was formed the same.
> (DSA0: --> DKA100 --> System Disk)

Of course.  When the MOUNT command runs, then obviously the disk it is 
on has to be mounted, so this disk is either the system disk, or a disk 
which has already been mounted, and for that to happen, the system disk 
has to be mounted.

> If I removed the DSA1:-related MOUNT command also, the second shadow set was
> not created at all, resulting in a lot of error and informational
> messages at startup (all DCL statements involving DSA1:).
> So I must keep the MOUNT DSA1:.... in the startup file ...

Yes, this is as expected.

However, it is bad style to have more than one statement referring to 
DSA1.  There should be exactly ONE statement referring to it, the MOUNT 
command.  This defines DISK$label_name automatically, and optionally you 
can define another logical name then.  Use these logical names later on.