[Info-vax] OpenVMS Hobbyist licence - howto

[Michael Kraemer]

Steven Schweda schrieb:

> JF Mezei wrote:
> 
>>
>>If the default is to place the structures at the middle of the drive,
>>and you have a 2,5gig drive or larger, this means that the critical
>>structures will be placed beyond the 1gb limit.
> 
> 
>    Yes, but this causes no actual problem with either the
> installation or normal operation.  The disk corruption occurs
> when a crash dump corrupts the disk.
> 
>    One might argue that "the problem" is the installation of
> critical (dump) files in unfortunate places, and that this may
> occur during installation, but this is only one interpretation
> of "the problem", which is why I posed the question I did,
> namely, "Which problem occurs where when?".

The official prescription to install VMS goes like:

MOUNT/FOREIGN dka0:
BACKUP/IMAGE/VERIFY dka400:[0,0]VMS073.B/SAVE_SET dka0:
LOGOUT

then shutdown and reboot the system:

boot dka0:


So if whatever "backup" copies to dka0 is located
above 1GB, the subsequent boot would fail.
If it is guaranteed that those initial file(s)
go to lower blocks (as it is in the Ultrix case),
it might not be a problem. But this is nowhere
documented, AFAIK.