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From: J Wunsch <j@uriah.heep.sax.de>
Message-Id: <199611020933.KAA27255@uriah.heep.sax.de>
Subject: Re: ide name slot allocation problem
To: freebsd-hackers@freebsd.org (FreeBSD hackers)
Date: Sat, 2 Nov 1996 10:33:50 +0100 (MET)
Cc: proff@profane.iq.org (Julian Assange)
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
In-Reply-To: <199610291116.WAA00431@profane.iq.org> from Julian Assange at "Oct 29, 96 10:16:49 pm"
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As Julian Assange wrote:

> The physical arrangement is a master ide on each
> controller and no slave. Controller is triton - on
> board controller.

Unlike SCSI, IDE name slot allocation has always been based on
``physical slots'' (i.e., two slots per controller, regardless of
whether a drive is connected or not).  The same is true for e.g.
the fd driver.

> bash# newfs /dev/rwd2s1
> newfs: /dev/rwd2s1: `1' partition is unavailable

Usage error.  You gotta disklabel that slice first, and inside the
label, you create partitions `a' through `h' (as desired).  See the
updated topic 2.15 in the FAQ for conventions in naming the
partitions.

> The data for partition 0 is:
> sysid 165,(FreeBSD/NetBSD/386BSD)
>     start 63, size 204561 (99 Meg), flag 80
>         beg: cyl 0/ sector 1/ head 1;
>         end: cyl 202/ sector 63/ head 15
> The data for partition 1 is:
> sysid 165,(FreeBSD/NetBSD/386BSD)
>     start 204624, size 3119760 (1523 Meg), flag 0
>         beg: cyl 203/ sector 1/ head 0;
>         end: cyl 1023/ sector 63/ head 15

Having two FreeBSD slices is basically useless.  Of course, you _can_
do it, but you gotta disklabel them as well, so you gain nothing by
storing it in two slices (as opposed to two BSD partitions), except
perhaps the flexibility that you might easily return one of the slices
to another o/s later if you desire.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)