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Date:      11 Jun 99 08:54:06 EDT
From:      C J Michaels <cjm2@netscape.net>
To:        Randy Porter <rporter@jnpcs.com>, freebsd-questions@freebsd.org
Subject:   Re: [CDROM devices appearing twice as /dev/cd0a and /dev/cd0c]
Message-ID:  <19990611125406.6476.qmail@www0e.netaddress.usa.net>

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Randy,
This is perfectly normal.  The a and c represent partitions (in the UNIX =
sense
of the word).  The a partition is just the 1st partition on the drive and=
 the
c partition represents the "whole" drive.

The reason the mount works on both, is because in the case of your cd-rom=
s the
a partition takes up the whole drive.  In the case of a harddrive the a a=
nd c
would generally be different, but I personally heard of a partitioned cdr=
om (I
could be wrong).

Anyway, it is normal, take a look at man disklabel

-Chris

P.S. Sorry for the netscape mail, my regular work e-mail is down because =
of
that worm virus.

Randy Porter <rporter@jnpcs.com> wrote:
> I am setting up a FreeBSD 2.2.8 server to act as both a gateway and as =
a
> CDROM server using SAMBA to share CDs and file space for Windoze
> workstations.
> =

> I have 5 NEC SCSI CD drives connected to an Adaptec 1522 controller. =

> The device IDs are from 1 to 6, the card is 7, and the chain is
> terminated.  They are all functioning correctly using DOS.
> =

> I ran MAKEDEV for the additional 4 CD drives, and I now have devices fo=
r
> all five CDs, but it seems like they all appear twice, as both a cdXa
> and cdXc.
> =

> I can mount CDs using either the cdXa or cdXc, and there appears to be
> no difference between them.
> =

> I searched the web pages for cd0a and cd0c with no success.
> =

> Is this normal?  If so, is there a difference between the devices?
> =

> If it is not normal, any ideas about what could be causing it?
> =

> Thanks.
> =

> p.s.  If the answer is RTFM, please let me know what chapter or man pag=
e
> I should be looking for.
> =

> =

> =

> =

> -- =

> Randy Porter
> rporter@jnpcs.com
> http://www.jnpcs.com/rporter
> =

> ___________________________________________
> =

> Si Hoc Legere Scis Nimium Eruditionis Habes
> =

> If you can read this, you're overeducated.
> =

> =

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