From owner-freebsd-questions Fri Sep 14 8:16:15 2001 Delivered-To: freebsd-questions@freebsd.org Received: from lists.blarg.net (lists.blarg.net [206.124.128.17]) by hub.freebsd.org (Postfix) with ESMTP id 59AE637B409 for ; Fri, 14 Sep 2001 08:16:10 -0700 (PDT) Received: from thig.blarg.net (thig.blarg.net [206.124.128.18]) by lists.blarg.net (Postfix) with ESMTP id 09D04BD78; Fri, 14 Sep 2001 08:16:10 -0700 (PDT) Received: from localhost.localdomain ([206.124.139.115]) by thig.blarg.net (8.9.3/8.9.3) with ESMTP id IAA27491; Fri, 14 Sep 2001 08:16:09 -0700 Received: (from jojo@localhost) by localhost.localdomain (8.11.3/8.11.3) id f8EFG3838509; Fri, 14 Sep 2001 08:16:03 -0700 (PDT) (envelope-from swear@blarg.net) To: Salvo Bartolotta Cc: Kory Hamzeh , Brett Waldon , questions@FreeBSD.ORG Subject: Re: i dont unsterstand the disk label maker References: <1000474760.3ba2088862951@webmail.neomedia.it> From: swear@blarg.net (Gary W. Swearingen) Date: 14 Sep 2001 08:16:02 -0700 In-Reply-To: <1000474760.3ba2088862951@webmail.neomedia.it> Message-ID: Lines: 36 User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.1 (Cuyahoga Valley) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Salvo Bartolotta writes: > N.B. FreeBSD requires (at least) one DOS **primary** partition, ie at least > one slice. Some people wrote that they succeeded in making use of a (DOS) > extended partition, ie with some hacking. I haven't tried such an approach so > far; however, that is decidedly NOT for the faint of heart. A minor correction to the correction: By (M$DOS) "extended partition", "logical partition" is probably meant; that is, a sub-partition of a single extended partition which is one of up to four primary partitions. BSD slice <=> M$DOS primary partition in the sense that they occupy the same disk space and have similar disk partition table entries. BSD slice <=> M$DOS extended partition in the sense that they both contain sub-partitions, except that BSD supports four instead of M$DOS's one. BSD partition <=> M$DOS logical partition except for the difference in the number supported. M$DOS logical disk = M$DOS non-extended primary and logical partitions. P.S. The above breaks down a bit when sliceless (dangerously dedicated) disks are considered. The best analogy is probably that the entire disk corresponds to a BSD slice and M$DOS extended partition and that a BSD partition still <=> M$DOS logical partition, but I suspect that the intuitive analogy is that in this case only, BSD partitions <=> M$DOS primary partitions with a limit of 7 instead of 4. P.P.S. Slices and sliceless disks may have up to 7, not 8, partitions by my count which does not include the virtual partition, "c", which overlaps all the others. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message