[Info-vax] STARTREK.BCK Restore - How?

[Dave Froble]

On 5/9/2019 6:54 PM, rsgoodin at gmail.com wrote:
> I downloaded a saveset(I think) of StarTrek for VMS.
>
> 1. Downloaded StarTrek.zip from openvms hobbyist.com
>
> 2. Transferred the file to my VMS 7.3 system (SIMH, emulating a VAX)
>
> 3. Unzipped the file, creating StarTrek.bck.
>
> Now, here's where the fun starts...
>
> No matter what variant of BACKUP I use with the SELECT= parameter, I keep getting the %BACKUP-W-NOFILES, no files selected from... message.
>
> Has anyone successfully restored these files? What the heck am I doing wrong?
> How did you do this?
>
> Shawn Goodin
>
> "and to think, 35 years ago, I was a VMS system manager"
>

First, do a DIR/FULL on the file.  Then compare to this:

Directory SYS$SYSDEVICE:[DFE]

DASV2.BCK;1                   File ID:  (4163,60,0)
Size:         8631/8631       Owner:    [DFE]
Created:   22-JUN-2005 16:39:04.22
Revised:   22-JUN-2005 16:39:28.02 (1)
Expires:   <None specified>
Backup:    <No backup recorded>
Effective: <None specified>
Recording: <None specified>
File organization:  Sequential
Shelved state:      Online
Caching attribute:  Writethrough
File attributes:    Allocation: 8631, Extend: 0, Global buffer count: 0, 
No version limit
Record format:      Fixed length 32256 byte records
Record attributes:  None
RMS attributes:     None
Journaling enabled: None
File protection:    System:RWED, Owner:RWED, Group:RE, World:
Access Cntrl List:  None
Client attributes:  None

BACKUP by default when creating a disk based save set uses 32256 byte 
records.  You'll note the record format is fixed.

Perform HELP SET FILE /ATTRIBUTE

Set appropriate attributes for the file.

If that doesn't work, perhaps there is an alternate record size.

If you got Basic:

VAX BASIC V3.8-000

Ready

old [.util]ssbsize
Ready

list
SSBSIZE     9-MAY-2019 23:50

         map (t) Z9$=2
         map (t) word w1%

         input "Saveset name"; F$

         open F$ for input as file 1%, &
                 organization undefined, &
                 recordtype any, &
                 access read

         get #1%
         r% = recount
         field #1%, r% as buff$
         z9$ = mid(buff$,41%,2%)

         print "Saveset blocksize is: "; w1%

         close 1%

         end

Ready

run
SSBSIZE     9-MAY-2019 23:51

Saveset name? dasv2.bck
Saveset blocksize is:  32256
Ready


-- 
David Froble                       Tel: 724-529-0450
Dave Froble Enterprises, Inc.      E-Mail: davef at tsoft-inc.com
DFE Ultralights, Inc.
170 Grimplin Road
Vanderbilt, PA  15486