Date: Thu, 24 Oct 2002 14:40:15 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org, Takahashi Yoshihiro <nyan@jp.FreeBSD.org>, Bakul Shah <bakul@bitblocks.com>, Bruce Evans <bde@zeta.org.au> Subject: Re: cvs commit: src/lib/libdisk Makefile chunk.c write_alpha_dis Message-ID: <XFMail.20021024144015.jhb@FreeBSD.org> In-Reply-To: <2306.1035484197@critter.freebsd.dk>
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On 24-Oct-2002 Poul-Henning Kamp wrote:
> In message <20021025041846.B1170-100000@gamplex.bde.org>, Bruce Evans writes:
>>On Thu, 24 Oct 2002, Poul-Henning Kamp wrote:
>>
>>> In message <200210241603.MAA18418@leviathan.cnchost.com>, Bakul Shah writes:
>>>
>>> >Here is a *non* PC98 machine report. My 4 year old Toshiba
>>> >Ultium (a Ppro machine with onboard aic 7880 scsi controller)
>>> >does not boot. It can't find the root device and drops into
>>> >the rootmount menu. Until now I haven't had any time to even
>>> >hook up a serial port -- hope to send a more detailed report
>>> >today.
>>>
>>> Make sure you don't have one of the bogus "ad0a" style devices
>>> listed for your root filesystem.
>>
>>Yes, standard slice names are now decreed bogus. You have to use
>>i386-centric names like ad0s4a, at least on i386's with disks that
>>actually have slices.
>
> Please stop the FUD Bruce.
>
> First of all, this is no longer architecture dependent. You can
> use MBR's on your sparc64 if you for some reason feel like it.
>
> Second, the names follow what is on the disk.
>
> If your disk has only a BSD disklabel, then the names will be
> constructed by appending a single letter and we get:
> ${disk}[a-h]
>
> If your disk has an MBR, then the slices are named by appending
> "s%d" so the names become:
> ${disk}s[1-N]
>
> If you put a BSD disklabel in one of the slices, the name
> will still be constructed by appending a single letter, so the
> names become:
> ${slice}[a-h]
> or if you like
> ${disk}s[1-N][a-h]
And all i386 disks have MBR's cause the BIOS basically wants them
there and won't work without them. Pretending that they don't
exist is just nonsense.
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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