Subject: Re: DMA
To: der Mouse <mouse@Collatz.McRCIM.McGill.EDU>
From: Curt Sampson <curt@portal.ca>
List: port-sun3
Date: 01/14/1996 19:31:41
On Sun, 14 Jan 1996, der Mouse wrote:
> I think I know what happened here: swapping uses _all_ of the swap
> partition, whereas an FFS filesystem does not use the first 8K of its
> partition, reserving it for boot space on root filesystems and
> everywhere else for consistency.
>
> So when you put swap at offset 0, you ended up swapping all over your
> disk label (and possibly boot blocks, depending).
Well, no. I would write the disk label, but I couldn't even dd the
miniroot on to the swap FS; I got a `filesystem is read-only' error,
or something along those lines.
> Try putting swap at the smallest offset you can (above 8K, that is),
> which since this is a boot pack and therefore uses a SunOS disk label
> means one cylinder. (Or at least one cylinder according to the
> geometry information in the label, which in my experience does not have
> to match the actual geometry of the disk.)
Anyway, it did occur to me starting swap at cylinder 0 might tromp
on the boot blocks, so I tried starting it on cylinder 1, but with
the same result.
> > De gustibus, aut bene aut nihil.
>
> "Of taste, either well or not at all" - are you trying to say taste is
> dead, or something?
Oh dear, now I have to explain this again. :-)
It's a humourous misquote that I stole from a character in Chekhov's
_The Seagull_. There are a couple of popular Latin sayings. _De
gustibus, non disputandum est_ (Cicero, I think) is `There's no
arguing taste' (not that I necessarially agree with that). _De
mortiis, aut bene aut nihil_ is generally translated as, "Of the
dead speak well or not at all." The character in _The Seagull_
conflates the two, producing _De Gustibus, aut bene aut nihil,_
which could conceivably be translated as "Taste: you got it or you
don't." :-)
cjs
Curt Sampson curt@portal.ca Info at http://www.portal.ca/
Internet Portal Services, Inc.
Vancouver, BC (604) 257-9400 De gustibus, aut bene aut nihil.