[Info-vax] Out of diskspace :(

[Paul Sture]

On Sat, 19 May 2012 12:20:24 +0100, Single Stage to Orbit wrote:

> On Sat, 2012-05-19 at 07:53 +0200, Martin Vorlaender wrote:
>> Single Stage to Orbit wrote:
>> > What is the largest size for disks that SimH-vax supports? Currently
>> > these are 2GB SCSI disks. Is there anything else larger I can
>> > configure SimH-vax with?
>> 
>>    SET RQn RAUSER=s    ! set type to RA82 with size s MB
>> 
>> If your SimH/VAX is compiled with large file support, the maximum size
>> is 1 TB.
> 
> Ah, excellent, I wasn't aware one could specify the disk size.
> 
>> Use the SimH console to check whether large file support is compiled
>> in:
>> 
>>    sim> show version
>>    VAX simulator V3.8-1 [64b data, 64b addresses, Ethernet support]
> 
> And that brings us to another problem; is it possible to 'grow' the disk
> image or will I have to create the disk and copy the original disk into
> the larger disk?

I would advise against trying this.  In an attempt I made a couple of 
months ago I changed the existing disk to use RAUSER=n, with a much 
larger value for n than the original disk size, and a subsequent MOUNT 
command couldn't find the disk's home block.

According to PDF page 15 of vax780_doc.pdf (available from the trailing-
edge site), RAUSER sets the disk type to RA82, so unless the original was 
an RA82 you are probably going to run into trouble.

I would recommend creating a new disk with the desired capacity and using 
BACKUP to transfer existing data to it.

-- 
Paul Sture