[Info-vax] OpenVMS Hobbyist licence - howto

[Bob Eager]

On Thu, 31 Dec 2009 02:48:06 -0500, John Santos wrote:

> In article <hh7t52$psg$03$1 at news.t-online.com>, M.Kraemer at gsi.de
> says...>
>> Bob Eager schrieb:
>> 
>> > Yes, I have a stock of DPES-31080. But an IBM 0662 was a fraction too
>> > big. Note that this was in terms of what the console firmware
>> > reported (too big, and it gave a silly small number, obviously the
>> > size modulo 1GB).
>> > 
>> > Another machine (VS model 60) tokk 4GB disks, but the IBM DDRS-34560
>> > was too big before 'modification'.
>> 
>> These 1, 2 and 4GB limits are not uncommon with antique systems. Ultrix
>> <4.2 can't cope with 1GB+ disks, no version of Ultrix supports
>> partitions >2GB, HP-UX <=9 doesn't install on disks >2GB, etc etc.
>> I wasn't aware the more modern VS4000 line has such limitations too.
> 
> I'm 99.99% certain it doesn't.  The 6-byte SCSI command limitation only
> applied to the firmware on some early 3100's. IIRC.  All the later
> systems used 10-byte SCSI commands.

Pretty sure my VS4000-60 maxes out at 4GB.

But, as I said before (and it seems to have been lost in the welter of 
comments) I wasn't suggesting that was because of 6-byte SCSI commands. 
However, 4GB would be the limit of an unsigned 32 bit integer, and I 
suspect the firmware just wraps at 4GB.

Doesn't matter once it's booted (if it boots) of course.

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