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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!news.sprintlink.net!wizard.pn.com!Germany.EU.net!news.dfn.de!gs.dfn.de!fauern!news.tu-chemnitz.de!irz401!uriah.heep!not-for-mail From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: mount floppy Date: 2 Oct 1995 00:38:18 +0100 Organization: Private FreeBSD site, Dresden. Lines: 32 Message-ID: <44n8pa$jvu@uriah.heep.sax.de> References: <DFKs5t.2qo@cerc.wvu.edu> <44f7ko$139@uriah.heep.sax.de> <DFq22B.Cx@tarush.chattanooga.net> NNTP-Posting-Host: uriah.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Tom Rush <tom@tarush.chattanooga.net> wrote: >J Wunsch (j@uriah.heep.sax.de) wrote: >: If you care to create an ufs floppy (native BSD file system), use > >: disklabel -r -w -B fd0 fd1440 >: newfs -t2 -u18 -l1 -i65536 /dev/rfd0a > ^^^^^^^^^^^^^^^^^^^^ > >Thanks for explaining this. The instructions for this process in >/etc/disktab leave out the arguments to newfs. If you do it that way, >you get a floppy with about half the space wasted. (Maybe someone >should add this to /etc/disktab...) Yes. >For the floppy, it seems essential. But I noticed that when I installed >the system, the default value of 4096 sectors/cylinder was used instead >of the actual value derived from the disk geometry. Is this the best >way to do it, or should you tell newfs the actual geometry (using the >menu option that allows you to do this)? Overriding the values from the disklabel to 4096 blocks/cylinder improves the performance for all "modern" disks. That's why it's been made the default (and FreeBSD 2.1+ won't bother you with a useless warning about this). Only "true" disks are better served with the actual values, that is: floppies and other drives with removable media (ZIP, MOD, Syquest). -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ Never trust an operating system you don't have sources for. ;-)