*BSD News Article 94406


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From: Tony Griffiths <tonyg@OntheNet.com.au>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Installation onto large IDE drives
Date: Fri, 25 Apr 1997 16:06:35 +1000
Organization: On the Net (ISP on the Gold Coast, Australia)
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To: Dave Roberts <dave.roberts@saaconsultants.com>
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Dave Roberts wrote:
> 
> This is probably a FAQ, but I've searched the FAQ and can't find a
> reasonable answer.
> 
> A user in my company wants to install FBSD 2.2.1 onto his P166.  It's
> got a 1.5 IDE hard disc, and claims that it has something like 3148
> cylinders.
> 
> Now I have read about keeping the root partition below the 1024th
> cylinder, but also that Win 95 likes to be on the first part of the
> first disc.  And that there can only be 4 slices per disc.(?)

I think that this is a BIOS limitation, not a FreeBSD limitation.  I
think the "best" way to handle this sort of thing is to set the disk to
LBA mode right minimises the number of 'cylinders' on the disk!

> 
> So, does this mean that I should create 4 slices.  Set the first
> slice to be C: and install Win95.  Use the second slice for the
> FBSD root partition.  The 3rd and 4th slices can then be for Win
> apps, and other FBSD partitions.  How does that sound?

Don't get confused between 'slices' (DOS partitions) and FreeBSD
partitions.  Each disk slice, if it is marked as a BSD slice, can
contain up to 8 (a .. h) partitions.  I think that the only restriction
is that the root partition has to be "a".

I would create the first slice for Win95 (actually I wouldn't because I
don't want anything to do with Win95!), and the second slice for BSD
(all partitions).  If you don't feel like having only 2 large slices,
then make these smaller and define two others.

Depending on what you want to do with FreeBSD, you can get by with only
a few hundred meg.  In fact I've installed FreeBSD on a Zip drive which
only has 96 MB, however, you can't put the sources or X on this amount. 
I would allocate enough for 32MB root, 64 MB -> 128 MB swap depending on
physical RAM and whether you're running X, and 200 MB or so for /usr and
/var (I move /var -> /usr/var and create a softlink!).  So all up you
want about 300 -> 350 MB for FreeBSD.

> Or is there a slicker way of doing this?

It's really "suck it and see" territory...

Tony