Date: Mon, 7 Feb 2011 22:31:14 -0500 From: freebsd_user@guice.ath.cx To: "Julian Elischer" <julian@freebsd.org> Cc: freebsd-usb@freebsd.org Subject: Re: mount and umount large capacity external USB HDD (fstab) Message-ID: <db34cd9bb6c028a3373767e88a0fd214.squirrel@wtp1.ath.cx> In-Reply-To: <4D50A3CB.9030301@freebsd.org> References: <fb4d98f87a0479fee830ee51d1fe8d15.squirrel@wtp1.ath.cx> <201102071853.p17IrlhC009850@belinda.androcles.org> <4afb11a2cba1286de56928b6b8c61c00.squirrel@wtp1.ath.cx> <4D50A3CB.9030301@freebsd.org>
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... snip snip .... >> >> We will read that recipe. Should anyone make additions to this thread >> we >> are all eyes_&_ears. >> > > As was mentioned before, the limitationcomes from the defintion of the > partition > structures. Firstly the fdisk structure introduced with the IBM PC (I > think) has onlt room for > 32 bits on its sector tables. secondly the bsd 'label' structure > introduced > in the 80s has a similar limitiation. > The new structure to get around this is the GPT structure. you need to > partition > the drive with a gpt capable partitioning tool.. gpart claims to do > this (though > I have never done it as I don't have a need (yet)). This limitiation > will affect > any system which you wil use to write those partition types and is > indepenent > of file system. In addition Once you have made a partition big > enough, you > will need to populate it wirth a filesystem capable of representing > data to that scale. > UFS2 and ZFS are two candidates for this. > > If you take a modern Windows, it will probably partitionthe drive > using a GPT table > or some similar modern structure.(I don't have any modern windows > system so I can't tell > you exactly what they do, but they MUST have done the same thingif > they didn't use GPT itself.) > This is a separate step from puting the file system on, though the > windows tools may > present it as a single step. > > I hope y'all will find this useful. > Thank you. As Mr. Hesser pointed out earlier; it must be time for us to learn gpart and friends :-)
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