Date: Wed, 2 Oct 2002 15:58:11 -0500 From: Dan Nelson <dnelson@allantgroup.com> To: Matthew Donadio <m.p.donadio@ieee.org> Cc: Mike Hogsett <hogsett@csl.sri.com>, freebsd-questions@FreeBSD.ORG Subject: Re: 8.4Gb IDE Drive Limit Message-ID: <20021002205811.GC70812@dan.emsphone.com> In-Reply-To: <3D9B5359.C2C9E179@ieee.org> References: <200210021944.g92JhwWZ006566@axp.csl.sri.com> <3D9B5359.C2C9E179@ieee.org>
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In the last episode (Oct 02), Matthew Donadio said:
> Mike Hogsett wrote:
> > How did you partition the 40Gb drive?
>
> Thanks for the reply.
>
> I split the drive in two with the intentions of installing FreeBSD on
> one slice, and Linux on the other (I haven't tried Linux yet). Are
> you suggesting that I should try putting / on a small slice by
> itself, and see if that boots? It's worth a shot.
I think the main problem with getting large drives to boot on old
BIOSes is the 1024-cylinder limit. You need to make sure the kernel is
located near enough to the start of the disk that it can be accessed
with BIOS calls. If your FreeBSD partition is on the 2nd half of the
disk, it probably won't boot. You might want to set it up like:
|<- 1024-cyl point
+----+-------|-----------------------+------+-------------------+
| / | / : swap : /usr | swap | /usr |
+----+-------------------------------+------+-------------------+
^ ^ ^ ^
Linux FreeBSD slice containing Linux Linux
root all FreeBSD partitions swap /usr
>sda1< sda2 >sda3< >sda4<
da0s1 >da0s2< da0s3 da0s4
That way both Linux and FreeBSD get their kernels near the start of the
disk.
--
Dan Nelson
dnelson@allantgroup.com
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