[Info-vax] History question about ODS-1

Lee Gleason lee.gleason at comcast.net
Mon Jul 29 16:42:52 EDT 2019


"Bob Gezelter"  wrote in message 
news:c989612d-95a9-485d-abcc-f0b06bd39a42 at googlegroups.com...

>> I had occasion today to try and mount an ODS-1 disk on a VAX VMS 7.3 
>> system.
>> It failed with an unsupported structure level message.
>>
>>   I haven't done this in a long time, and don't recall what version of 
>> VMS
>> I used last time.
>>
>>   I poked around a bit, but couldn't find documented, what was the final
>> version of VMS that supported ODS-1?

>Did you specify the structure level on the MOUNT command?

  I had a shot at that, but there doesn't seem to be a /structure switch for 
mount. I also tried assorted values for /processor, but, no dice.

  It looks to be a size problem - apparently VMS 7.3 only supports ODS-1 
volumes up to a certain size. This is an RA92 ODS-1 disk image, from an RSX 
system, which is apparently too big for VMS. I'm basing this guess on the

%INIT-F-LARGECNT, disk too large to be supported

message I get when I try and INIT an RA92 as ODS-1 using the /STRUCT=1 
switch.

--
Lee K. GLeason N5ZMR
Control-G Consutants
lee.gleason at comast.net 




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