Date: Fri, 18 Oct 1996 09:34:44 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-hackers@freebsd.org (FreeBSD hackers) Cc: kuku@gilberto.physik.rwth-aachen.de (Christoph Kukulies) Subject: Re: 2.2-961014-SNAP install problem Message-ID: <199610180734.JAA25986@uriah.heep.sax.de> In-Reply-To: <199610171327.OAA29987@gilberto.physik.rwth-aachen.de> from Christoph Kukulies at "Oct 17, 96 02:27:56 pm"
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As Christoph Kukulies wrote: > The partition editor barfed at my disk geometry and > decided to take 2050/64/32 instead of the > native geometry of 3925/10/107. Trying to enforce > the latter (G option) doesn't seem possible. The native geometry of any fairly modern disk is not expressable in plain C/H/S terms. If you're using SCSI disks, they are always translated: the SCSI protocol doesn't know the term `head', `cylinder', or `sector number' in order to address a block on some storage medium. All it knows about is a block number. We've been repeating this over and over again: the only geometry you should use is the same as your disk is known to the BIOS. If your disk is not used by the BIOS at all, you can pick whatever value you want, as long as the total number of blocks (C*H*S) on the medium is not higher than the medium capacity. In this case, the ``dangerously dedicated'' mode is the only mode where you can use all the blocks of the medium (which is normally larger than anything that could be expressed as a product C*H*S where all the elements are integer numbers). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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