Message-ID: <466D2E52.4000904@ums.usu.ru>
Date: Mon, 11 Jun 2007 17:13:22 +0600
From: "Alexander E. Patrakov" <patrakov@ums.usu.ru>
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To: Carlo Wood <carlo@alinoe.com>, linux-kernel@vger.kernel.org
Subject: Re: ide0=noprobe, hda=noprobe, hda=none ignored?
References: <20070610185439.GA12202@alinoe.com>
In-Reply-To: <20070610185439.GA12202@alinoe.com>
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Carlo Wood wrote:
> I've been trying for months to get my box to boot faster
> by ignoring the not connected hda/hdb (ide0).
> 
> ansset:~>dmesg | egrep '(noprobe|ide0|hda|hdb)'
> 
> Kernel command line: root=/dev/hde3 ro ide0=noprobe
>     ide0: BM-DMA at 0xd800-0xd807, BIOS settings: hda:pio, hdb:pio
> Probing IDE interface ide0...
> hda: IRQ probe failed (0xfffffdb8)
> etc.
> 
> or
> 
> Kernel command line: root=/dev/hde3 ro hda=none hdb=none
>     ide0: BM-DMA at 0xd800-0xd807, BIOS settings: hda:pio, hdb:pio
> Probing IDE interface ide0...
> hda: IRQ probe failed (0xfffffdb8)
> 
> same for hda=noprobe hdb=noprobe
> 
> Nothing helps.
> 
> Is this a bug or not? I'd think that saying "noprobe" means
> "do NOT probe" - but it probes anyway.


If your kernel uses modular IDE drivers and an initrd/initramfs that loads 
them, your result is the expected one (i.e.: not a bug). One should add the 
following or similar options into /etc/modprobe.conf in the initrd in order 
to get the result:

options ide_core options="ide0=noprobe hda=noprobe hdb=noprobe"

If you don't use initrd, or have a non-modular IDE driver, please ignore 
this message.

-- 
Alexander E. Patrakov
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