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Date:      Tue, 15 Jun 1999 13:36:00 +0200
From:      Ladavac Marino <mladavac@metropolitan.at>
To:        "'jbarbee@singular.com'" <jbarbee@singular.com>, freebsd-questions@freebsd.org
Subject:   RE: what determines the drive number of disks?
Message-ID:  <55586E7391ACD211B9730000C110027617966D@r-lmh-wi-100.corpnet.at>

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> -----Original Message-----
> From:	jbarbee@singular.com [SMTP:jbarbee@singular.com]
> Sent:	Tuesday, June 15, 1999 5:50 AM
> To:	freebsd-questions@freebsd.org
> Subject:	what determines the drive number of disks?
> 
> Hi,
> 
>   I used to have 1 drive, named da0, on adv0 (an advansys controller).
> 
>   I added 4 more drives on ncr0 (a symbios controller).
> 
>   I recompiled the kernel for ncr0 as well as da1..4.
> 
>   When I start up what used to be da0 is now da4.  In the boot string
> I
> must type 0:da(4,a)kernel or the kernel can't mount root (i thought
> adding
> "root on da4" in the kernel fixes that).  Even when I do startup, the
> fstab
> doesn't match the new hardware setup.
> 
>   What determines the disk number upon startup?  How can I fix this?
> Should I just edit my fstab and set up a new default boot string, even
> though that seems silly?
	[ML]  The probe order of the controllers, and then the ID and
LUN numbers.

	You can wire down the devices--take a look at LINT, there is an
example.
	Specifically, root on anything will not help, and is deprecated.

	/Marino

> john.
> please cc me.
> 
> 
> 
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