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Date:      Sun, 10 Sep 2000 12:12:23 GMT
From:      Salvo Bartolotta <bartequi@inwind.it>
To:        =?ISO-8859-1?Q?P=E4r?= Thoren <t98pth@student.hk-r.se>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: drive layout
Message-ID:  <20000910.12122300@bartequi.ottodomain.org>
In-Reply-To: <Pine.GSO.4.21.0009101215001.20196-100000@orc.rby.hk-r.se>
References:  <Pine.GSO.4.21.0009101215001.20196-100000@orc.rby.hk-r.se>

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>>>>>>>>>>>>>>>>>> Original Message <<<<<<<<<<<<<<<<<<

On 9/10/00, 11:21:05 AM, P=E4r Thoren <t98pth@student.hk-r.se> wrote=20
regarding drive layout:


> Ok...

> some questions about the name of the devices

> ad0 is the first drive ad1 the second etc..
> The partitions are a-h.

> But what is the difference between

> /dev/ad0a-h and /dev/ad0s1a-h
> and what is /dev/ad0s1-4 ?

> what should I put in fstab?

> /P=E4r



Dear P=E4r Thoren,

adNsM indicates the Mth slice on the Nth (IDE) hard disk; e.g. ad0s1=20
is the first slice on the first (IDE) hard disk.

adNsMi indicates the ith partition (=3Dsubdivision within a slice; a=20
Unix slice ~ an M$-DOS partition) in the Mth slice on the Nth (IDE)=20
hard disk; e.g. ad0s1a is the first partition in the first slice on=20
the first hard disk.

AdNsi is, IIRC, an old (compatibility) scheme. I am not quite sure how=20
it works when you have more than one slice on the same disk (e.g.=20
ad0s1a, ad0s1e, ad0s1f; ad0s2a, ad0s2e, ad0s2f ...); on the other=20
hand, I use the ordinary label(l)ing in my /etc/fstab.

AFAICS, some people don't like the different schemes (0 =3D initial=20
disk; 1 initial slices); but that's another matter.

HTH all the same,
Salvo    =20





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