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From: Mike Clarke <jmc-freebsd2@milibyte.co.uk>
To: freebsd-questions@freebsd.org
Date: Sat, 4 Feb 2012 14:33:54 +0000
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Cc: Jonathan Vomacka <juvix88@gmail.com>
Subject: Re: fixating USB Storage
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On Saturday 04 February 2012, Jonathan Vomacka wrote:

> On Feb 4, 2012 4:54 AM, "Mike Clarke" <jmc-freebsd2@milibyte.co.uk>
> wrote:
?
> > Sounds similar to my experience. Normally my internal 4 slot memory
> > card reader is assigned devices da[0-3] and when the USB memory
> > stick is inserted it comes up as da4. If the USB stick is present
> > on booting then it appears as da0 and the card reader is da[1-4].
> > So it looks like occupied slots are given priority when numbers are
> > assigned at boot time.
> >
>
> Do you know if it is different with zfs system?

That was with a UFS basedFreeBSD 8.1-RELEASE system but I've just tested 
it 9.0-RELEASE booting from ZFS and it does just the same.

-- 
Mike Clarke