Re: Boot disc question

[<rabbit@kotnet.org>]

Maybe one more way to do it, especially when you already have installed
OBSD on a disk on one of the two controllers, but want to do a reinstall
on multiple disks on both controllers (that's what you want, right? And
I assume you already did some install since you said it works with the
generic kernel after boot):
You can just download the file 'bsd.rd' and put it in '/'. Then, at the
boot prompt, specify you want to boot that instead of bsd, the regular
kernel by typing something like "boot hd0a:/bsd.rd"
That'll boot you up into the install system, with a big kernel. Normally
both the drivers you need should be in there, so once you've booted it,
you can just redo the install the way you like, using both controllers.
More info on this bsd.rd can be found here:
http://www.openbsd.org/faq/faq4.html#bsd.rd

 - rabbit

----- Original Message -----
From: "Estevam Viragh Junior" <estevam.viragh@sitelbrasil.com.br>
To: <misc@openbsd.org>
Sent: Tuesday, June 18, 2002 10:14 PM
Subject: RES: Boot disc question


> Thanks for your time, rabbit!
> > Due to space constraints, each floppy has a different, stripped down
> > kernel, each with a different set of drivers available.
> > You can look at their kernel configurations here:
> > http://www.openbsd.org/cgi-bin/cvsweb/src/sys/arch/i386/conf/
> >
> > As you can see, ahc is enabled in RAMDISK (=floppy A), and disabled
in
> > RAMDISKB (=floppy B). With cac, it's the other way around. That
explains
> > why they work/don't work depending on which floppy you use.
> > When you look at RAMDISK_CD, you'll see that both are enabled, since
> > there's more space on a cd so the kernel can be bigger :)
> > So if you boot from a cd, they'll both work fine. You can also try
to
>
> yeah. I'll try to buy one.
>
> > build you own customized bootfloppy, with a custom kernel (it'll
have to
> > be small, so better start from one of the default floppies, enable
the
> > driver you need, and throw out what you don't need to free up
space),
> > though that's not too easy (I can't tell you exactly how to do it,
since
> > I would have to do some research myself :-) )
>
> Thanks again! If you get some thing, please let me know.
>
> >  - rabbit
> >
> > ----- Original Message -----
> > From: "Estevam Viragh Junior" <estevam.viragh@sitelbrasil.com.br>
> > To: <misc@openbsd.org>
> > Sent: Tuesday, June 18, 2002 8:04 PM
> > Subject: Boot disc question
> >
> >
> > > Hy list,
> > >
> > > I'll appreciate some help on the following:
> > >
> > > SCENARIO:
> > >
> > > I have a server with a Compaq Array Controler 431 and an Adaptec
Host
> > > Adapter AHA-2940W.
> > >
> > > INFO, (from OBSD site):
> > >
> > > - Adaptec AHA-[23]94x[W] cards and some on-board PCI designs using
the
> > > AIC7870 and AIC7880 chips. (ahc) (C)
> > > - Compaq Smart ARRAY RAID controllers (cac), including: (A) (C)
> > > Compaq Smart Array 221, 3100ES, 3200, 4200, 4250ES, 431
> > >
> > > WHAT'S EXPECTED:
> > >
> > > If booting with floppyB, it would be able to detect and configure
both
> > > controlers.
> > >
> > > WHAT HAPPENED:
> > >
> > > Bootting with:
> > > Floppy A - ahc detected and worked fine; OK
> > > cac detected but not configured.
> > > (just as expected)
> > >
> > > Floppy B - ahc detected but not configured;
> > > cac detected and worked fine. OK
> > > (???)
> > >
> > > Floppy C - ahc detected but not configured;
> > > cac detected but not configured.
> > > (just as expected)
> > >
> > > and:
> > > After the instalation, both controles work fine.
> > >
> > > QUESTIONS:
> > >
> > > Why ahc didn't work with floppyB ? How to solve that?
> > > Is that some kind of UKC config ?
> > > What if I try that with a OBSD 3.1 CD ?
> > > How to customize a boot disc to make both controlers work?
> > >
> > > rgds,
> > > ESTEVAM VIRAGH JUNIOR
> > > estevam.viragh@sitelbrasil.com.br