Date: Sun, 25 Jan 2009 03:51:20 +0100 From: Polytropon <freebsd@edvax.de> To: cpghost <cpghost@cordula.ws> Cc: Gary Kline <kline@thought.org>, freebsd-questions@freebsd.org Subject: Re: how to create a DVD backup filesystem? Message-ID: <20090125035120.857ab8d3.freebsd@edvax.de> In-Reply-To: <20090125023544.GD6405@phenom.cordula.ws> References: <20090123011043.GA86638@thought.org> <497954FE.8050206@gmail.com> <497a08f0.M7aLYVzoum%2Bg95mw%perryh@pluto.rain.com> <20090125020349.47c3eb68.freebsd@edvax.de> <20090125015632.GD31215@thought.org> <20090125023544.GD6405@phenom.cordula.ws>
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On Sun, 25 Jan 2009 03:35:44 +0100, cpghost <cpghost@cordula.ws> wrote: > In addition to the cdrecord examples shown earlier, you can also > simply use burncd: > > # burncd -f /dev/acd0 -s max data cdr.iso fixate An addition: -s max will select the drive's fastest speed. This can lead to problems if your media is cheap and can't handle a speed of 32x or 48x (writing speed). You can manually set a speed where you and your media feel safe. :-) Personally, I don't record faster than 16x. There is a saying (urband legend?) that you shouldn't record audio CDs faster than 8x, but I'm not sure if this applies. > But remember one thing: don't try to mix and match accesses to > /dev/acd0 and /dev/cd0. IIRC, there are (were?) some issues with > using ATAPI and ATAPICAM drivers simultaneously. I haven't found such issues yet, but I dropped burncd some time ago because it wouldn't work on /dev/acd0 anymore (on 5.x, it did and was my preferred tool), so I switched to cdrecord and cdrdao, using the ATAPICAM facility. > If you prefer to stick to ATAPICAM (recommended), use cdrecord > to write to the virtual device represending the burner. Use > cdrecord's -scanbus option (as root!) to find out: > > phenom# cdrecord -scanbus > [...] > 0,1,0 1) 'Optiarc ' 'DVD RW AD-7203A ' '1.01' Removable CD-ROM > [...] I think the camcontrol utility (provided by the OS) works, too: % camcontrol devlist <HL-DT-ST DVD-RAM GSA-H58N 1.01> at scbus1 target 0 lun 0 (cd0,pass0) ^ ^ ^ ^^^ This command shows you the SCSI ID 1,0,0 and the device /dev/cd0 for the recorder at the same time. Instead of giving them as command line options to the various tools, you can create their config files and put this information there (refer to the manpages for the name and content description of the files). But because on systems the SCSI ID's don't change on a regular basis, using wrapper scripts or shell aliases will make burning comfortable, and they need service only if you change something in the hardware. -- Polytropon >From Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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