Date: Sat, 2 Aug 2014 23:43:43 +0200 From: Polytropon <freebsd@edvax.de> To: "William A. Mahaffey III" <wam@hiwaay.net> Cc: FreeBSD Questions !!!! <freebsd-questions@freebsd.org> Subject: Re: FreeBSD 9.3 new install problems .... Message-ID: <20140802234343.c4243aae.freebsd@edvax.de> In-Reply-To: <53DD533D.7090700@hiwaay.net> References: <53DAFCF2.2070909@hiwaay.net> <alpine.BSF.2.11.1407312131550.50731@wonkity.com> <53DB9797.1010702@hiwaay.net> <20140801164335.GA16376@slackbox.erewhon.home> <53DBF71D.3080807@hiwaay.net> <20140801232843.GB17393@slackbox.erewhon.home> <53DCF32A.30700@hiwaay.net> <20140802185442.GA28910@slackbox.erewhon.home> <53DD533D.7090700@hiwaay.net>
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On Sat, 02 Aug 2014 16:08:13 -0500, William A. Mahaffey III wrote: > P.S. sorry for me klutzy nomenclature, I am calling /dev/ada0p3 a > partition, when as you correctly observe it is a device .... my bad, & > maybe the source of confusion in my posts :-/ .... You're _not_ doing it wrong. :-) The _file_ /dev/ada0p3 represents a GPT partition (the 3rd GPT partition of the 1st SATA disk). It's valid to refer to /dev/ada0p3 as a partition. A partition carries a file system. For comparison: /dev/ad0s1 would be called a slice, which is synonymous for a "DOS primary partition", or MBR partition. The _real_ partition carrying a file system would be /dev/ad0s1a, for example (the 1st partition of the 1st slice of the 1st ATA disk). If a dedicated approach would have been taken, i. e., the slicing part omitted, /dev/ad0a would be a partition (the 1st partition of the 1st ATA disk). While a slice can carry many partitions (file systems) - 'a' = bootable, 'b' = swap, 'c' = the whole thing, 'd', 'e' and so on -, a GPT partition only carries one partition (a file system) - 'c', and this letter is simply omitted. ad0, da0, ada0 -> disk ad0p1 -> GPT partition ad0s1 -> MBR partition = slice (carries partitions) ad0s1a, ad0s1d -> partition ad0a -> bootable partition (dedicated) ad0 -> partition (dedicated, "data partition"), it's ad0c Note that all non-GPT partitioning has little meaning today, but it's worth knowing the difference and history in order to use the correct terminology with confidence. :-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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