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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.bhp.com.au!mel.dit.csiro.au!munnari.OZ.AU!news.ecn.uoknor.edu!news.uoknor.edu!news.nodak.edu!netnews1.nwnet.net!news.u.washington.edu!uw-beaver!uhog.mit.edu!news.mathworks.com!fu-berlin.de!news.dfn.de!news.uni-jena.de!news.HRZ.HAB-Weimar.DE!News.HTWM.De!news.tu-chemnitz.de!irz401!uriah.heep!news From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: HD copy Date: 26 Jan 1996 23:33:50 GMT Organization: Private BSD site, Dresden Lines: 38 Message-ID: <4ebocu$ke2@uriah.heep.sax.de> References: <31087250.6742@server.wulaw.wustl.edu> Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) NNTP-Posting-Host: localhost.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Newsreader: knews 0.9.3 Matt Rosenberg <matt@server.wulaw.wustl.edu> writes: > dd if=/dev/rwd1 of=/dev/rwd2 > > PROBLEM: I can't find such a small (431 MB) hard drive anywhere with > the exact same geometry. If installed a larger hard drive with at least > as many heads, cylinders, and sectors/track, but told the BIOS that it > really had the geomtry of the other disk, would this still work under > FreeBSD???? You could perhaps even enlarge it later, if you are careful. Make sure the BIOS uses the same number of sectors/track and heads/cylinder, otherwise it won't find the boot loader. Initially, both drives will look identically. If you're going to enlarge them, you have to tweak two things: the fdisk (``slice'') table, so the FreeBSD slice will become larger (or you could add another slice at the end as well). Note that the exact numbers for ending cylinder/sector/head are rather irrelevant for FreeBSD, the starting c/h/s numbers are, but only for the BIOS to boot. What matters is the size of the slice in sectors. Then, assuming you have extended the existing FreeBSD slice, run disklabel -e on it, and extend the `c' partition to exactly the same number of sectors as you did in the fdisk table. After this, you could create a new BSD partition in the newly gained space. I assume that all this will only work reliable when being made from the `fixit' floppy, so no file system is mounted by that time. Disclaimer: Use at your own risk. :-) -- 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. ;-)