Return to BSD News archive
Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.uwa.edu.au!classic.iinet.com.au!news.uoregon.edu!news.sprintlink.net!EU.net!Germany.EU.net!zib-berlin.de!irz401!uriah.heep!not-for-mail From: j@uriah.heep.sax.de (J Wunsch) Newsgroups: comp.unix.bsd.freebsd.misc,comp.periphs.scsi Subject: Re: Disk geometry yet again Date: 18 Sep 1995 00:24:41 +0200 Organization: Private FreeBSD site, Dresden. Lines: 26 Message-ID: <43i779$i9t@uriah.heep.sax.de> References: <DEwGt0.E5w@cogsci.ed.ac.uk> NNTP-Posting-Host: uriah.heep.sax.de Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:6449 comp.periphs.scsi:37972 Richard Tobin <richard@cogsci.ed.ac.uk> wrote: >- Is there any disadvantage to having partitions that don't start > on the (fictional) cylinder boundaries? Nope, only the BIOS might care about this. >A related question: years ago, when partitioning Sun SCSI disks, I >remember leaving "spare" cylinders, presumably in case of disk errors. >Everything I've heard since then implies that SCSI disks handle this >automagically - can someone explain? It _could_ handle it, but most drives don't do automatic bad sector reassignment as shipped. Run the command scsi -f /dev/rsd0.ctl -P 3 -m 1 -e as root, and set the following fields: AWRE (Auto Write Reallocation Enbld): 1 ARRE (Auto Read Reallocation Enbld): 1 -- 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. ;-)