*BSD News Article 46264


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From: j@bonnie.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: [Q] boot floppy & external cashe use
Date: 30 Jun 1995 08:09:28 +0200
Organization: Private U**x site, Dresden.
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References: <3sr377$3vr@bonnie.tcd-dresden.de> <3stnlt$9p6@euas20.eua.ericsson.se>
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Per-Einar Stromme <Per-Einar.Stromme@eua.ericsson.se> wrote:

>++All it does is setting the
>++non-cacheable bits on memory pages that need it, since they are disk
>++transfer buffers.)
>++
>	(Is this the differnce between OS2 and FreeBSD (in this context) ?)

No, i don't think so.  If i'm not mistaken, it's only relevant for
memory pages belonging to the ``ISA hole'' (0xa0000 - 0xfffff), and
for pages that are used for a bus-master DMA controller, e.g. one of
the better SCSI controllers.  If your OS/2 does already fail booting
the floppy, i don't think there's the problem.

>	I suppose Ill have to learn something about this. A pointer 
>	to some documentation (book/archive/etc.) aprichiated.

Ooops, i don't have a clue.  The only documentation i've got about
this is a German book describing the i386 (and marginally the i486)
architecture.  You should be able to find a good book about this
elsewhere if you're seriously interested.

>++>> >	[BTW. is it possible to save the printouts from the booting 
>++>> >	 process ?]

>++When the system is running (at least single-user).  As soon as you've
>++got a shell prompt somehow.

>	This means I have to install FreeBSD first I guess.

Yes, at least to the point where you can get the first shell access.
I think this will already require to put something onto the hard disk.
-- 
cheers, J"org                      private:   joerg_wunsch@uriah.heep.sax.de
                                   http://www.sax.de/~joerg/

Never trust an operating system you don't have sources for. ;-)