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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!bunyip.cc.uq.oz.au!munnari.oz.au!constellation!convex!convex!cs.utexas.edu!howland.reston.ans.net!EU.net!julienas!news-rocq.inria.fr!alix.inria.fr!soulard From: soulard@alix.inria.fr (Herve Soulard) Newsgroups: comp.os.386bsd.questions Subject: SCSI Ids and Device numbering. Date: 15 Jun 1994 09:00:59 GMT Organization: INRIA Lines: 14 Distribution: world Message-ID: <2tmg0b$71p@news-rocq.inria.fr> Reply-To: soulard@sor.inria.fr NNTP-Posting-Host: alix.inria.fr Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Keywords: scsi, device I have a question about those SCSI ids and the device numbering: Why the SCSI device with Id 0 is not the Unix device /dev/rsd0 ? Actually, the first SCSI device found while the system booted gets the device number 0, the second number 1, etc... If the system has external SCSI device or extractible disk that can be switched OFF, the fstab could mount the devices that do not exist. Is thus due to BSD semantics or to FreeBSD (and Linux) implementation ? Herve Soulard.