> I have a question about configuring the system disk in VMS.
>
> We have a VAXstation 3100 configured with 3 105 Meg drives. After
> installing VMS 5.3 (I don't have 5.4 yet) with DECwindows and the
> C compiler, there are about 10000 blocks left on this disk. I want
> to install VAX RDB, DECnet and VAXSET but there is not enough space
> on the system disk to this. Using VMSINSTAL, I'm not aware of any
> way to specify a target disk for these products.
>
> My question is this: With 2 other disks on this system, is there a
> way to logically extend the system disk onto one of the other disks?
>

I had the same problem and redefine SYS$COMMON and SYS$SPECIFIC so that they
check the second disk in addition to the primary system disk.

VMSINSTAL doesn't let you specify a target disk for a product, but it *can*
be fooled into installing products on another disk.  The following logical
definitions will do the trick:

--------------------------------------------------------------------------------
$!
$!  This command file redefines SYS$COMMON and SYS$SPECIFIC so that VMSINSTAL
$!  will install a product on a disk other than the system disk (DKB300:
$!  instead of DKA300:).
$!
$ define/sys/exec sys$common bimota$dkb300:[sys0.syscommon.]/tran=(conc,term),-
        bimota$dka300:[sys0.syscommon.]/tran=(conc,term)
$ define/sys/exec sys$specific bimota$dkb300:[sys0.]/tran=(conc,term),-
        bimota$dka300:[sys0.]/tran=(conc,term)
$ exit
--------------------------------------------------------------------------------

Note that you will need a [SYS0...] tree on the target disk.  You'll probably
need to create a few things by hand (I had too---things like [.SYSEXE] and
[.SYSLIB].  It'd probably be good to create all of the "normal" VMS system
directories).  The logicals above work because VMSINSTAL will create the
directories on VMI$ROOT, which translates to SYS$SPECIFIC in most cases (if I
remember right).  Once you've installed the products, you can swap the order
of the disks as specified above to make sure the system disk is checked first
(unless you want the second first, of course :-)).

VAX RDB is one of the products I installed this way, so I know it'll work for
that.

Hunter

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Hunter Goatley, VAX Systems Programmer          E-mail: GOATHUNTER@WKUVX1.bitnet
ACRS, Western Kentucky University               Voice:  502-745-5251
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