Date: Wed, 3 Feb 1999 20:35:23 -0600 (CST) From: Avalon Books <avalon@advicom.net> To: The Classiest Man Alive <ksmm@threespace.com> Cc: Matt Liu <MattL@ModaCAD.com>, FreeBSD Hackers <freebsd-hackers@FreeBSD.ORG> Subject: Re: Unable to newfs HD >10G with 3.0 Message-ID: <Pine.BSF.4.05.9902032025120.4534-100000@vespucci.advicom.net> In-Reply-To: <199902031917.OAA20775@geek.grf.ov.com>
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On Wed, 3 Feb 1999, The Classiest Man Alive wrote: > As far as I know, there are some limitations with the physical location of > the slice that holds the root directory (i.e., the "/" directory). > Unfortunately I'm not exactly sure what those limitations are. If anyone > can clarify, I'd be interested in knowing this as well. If memory serves, the root partition is limited to the first 1024 cylinders of a drive (what size this ends up being will depend on the drive's head and sector geometry). I haven't actually seen anything specifically detailing the size limits on type c, e and/or f partitions for FreeBSD's ffs. However. EIDE itself is another matter. Based on drive geometry and sector addressing limitation, the official EIDE spec ends around 8.4 Gbytes--anything bigger than that is a non-standard implementation. Note that most of the newer PC's don't seem to have much problem with this at the hardware level, and most of these non-standard drive appear to work as advertised. Operating systems don't think that some of these non-standard implementations are very funny, as turning a hard drive into a large number of blocks into a logical volume is not as easy as it sounds, and this can be made much more difficult when manufacturers start cutting corners on drive firmware... I have experienced this situation of an "unformattable" drive on several platforms, including Linux, FreeBSD and various win32's. Which makes and models seem to vary over time, though Fujitsu's and Quantum's seem to be particularly prone. --R. Pelletier Sys Admin, House Galigante We are a Micro$oft-free site To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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