Date: Sat, 8 Dec 2001 18:57:31 +0000 From: Josh Paetzel <friar_josh@webwarrior.net> To: Erik Moe <emoe@mmcable.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Purpose of /dev/cd0a and /dev/cd0c? Message-ID: <20011208185731.B398@twincat.vladsempire.net> In-Reply-To: <3C129A33.6AB98D8B@mmcable.com>; from emoe@mmcable.com on Sat, Dec 08, 2001 at 04:54:43PM -0600 References: <3C129A33.6AB98D8B@mmcable.com>
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On Sat, Dec 08, 2001 at 04:54:43PM -0600, Erik Moe wrote: > What is the significance of the two devices /dev/cd0a and /dev/cd0c, or > /dev/acd0a and /dev/acd0c for that matter? This is not explained in the > man pages or the handbook. Why would you use one and not the other? > > Thanks, > Erik Well, historically the c partition is used to refer to the entire disk. That would be the technically correct nomenclature to use. I didn't do too much digging, but I imagine the a partition exists as mount tries to make the cdrom look as much like a normal filesystem as possible. I believe it goes so far as to emulate a disklabel for it, which is why the a partition exists. Of course, in the case of a cdrom there's no difference. (although I suppose you could do some jUjU and create a cd with multiple partitions) Josh To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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