Date: 15 Feb 2005 09:45:13 -0500 From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> To: Mike Jeays <Mike.Jeays@rogers.com> Cc: freebsd-questions@freebsd.org Subject: Re: SCSI device numbers Message-ID: <44fyzx287a.fsf@be-well.ilk.org> In-Reply-To: <1108353173.33317.10.camel@chaucer.jeays.ca> References: <1108353173.33317.10.camel@chaucer.jeays.ca>
next in thread | previous in thread | raw e-mail | index | archive | help
Mike Jeays <Mike.Jeays@rogers.com> writes: > I have at present two emulated SCSI devices on my system; a USB flash > drive, and a DVD-writer. > > They get assigned: > > 0,0,0 0) 'SanDisk ' 'Cruzer Micro ' '2033' Removable Disk > 2,0,0 200) 'HL-DT-ST' 'DVDRAM GSA-4160B' 'A300' Removable CD-ROM > > if the USB device is present at boot time (I think). > > So my script for burning CDs, which says: > mkisofs -J -L -R -o x1.iso "$*" > cdrecord -v dev=2,0,0 x1.iso > rm -f x1.iso > is very fragile. > > How should I do it? Write a script to read the output of cdrecord > -scanbus and grab the device number? There has to be a "right" way, and > instinct says this isn't it. It's not a bad way. I'm not sure I understand why the device numbering is so fragile, though; wouldn't the ATAPI buses available at boot time be the same whether they have devices or not? -- Lowell Gilbert, embedded/networking software engineer, Boston area http://be-well.ilk.org/~lowell/
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?44fyzx287a.fsf>