Date: Wed, 10 Jan 1996 11:11:29 PST From: "Marty Leisner" <leisner@sdsp.mc.xerox.com> To: "Rodney C. Forbes" <urcf@fang.cs.sunyit.edu> Cc: questions@freebsd.org Subject: Re: a couple questions regarding a CDROM changer. Message-ID: <9601101911.AA09659@gnu.mc.xerox.com> In-Reply-To: Your message of "Sat, 06 Jan 1996 09:29:05 PST." <199601061729.MAA24971@fang.cs.sunyit.edu>
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> I installed a Nakamichi 7 disk CD-ROM changer last night to my
> FreeBSD-2.1.0-RELEASE system. I had to add the following two blocks to
> scsiconf.c. Maybe some kind soul would commit them so that any future
> owners of this device won't have to figure it out..
>
> /* Nakamichi 7 disk CD-ROM changer */
> {
> T_READONLY, T_REMOV, "NRC", "MBR-7" ,"*",
> "cd", SC_MORE_LUS
> },
>
> /* Nakamichi 7 disk CD-ROM changer */
> {
> T_READONLY, T_REMOV, "NRC", "MBR-7"
> ,"any", "cd", SC_MORE_LUS
> },
>
Can someone explain this to me a little more? I just bought a NEC 7 disk
changer (is it the same as the nakamichi? -- the Linux autoprobes
say something like NRC/MBR-7..
>
> 3. How can I read the CD-ROM's label? When mounted under DOS, all drives
> (including CD-ROM's) have labels. For instance, the FreeBSD-2.1.0
> beta CD when mounted under dos says something like "FREEBSD-2.1.0".
> How can I get this info?
>
> --
I wrote a little program which does an open on the device, an lseek and a
read...the label is a some fixed offset...I did this by inspection...
You just need permission to read the raw device (or the program has to be
setuid...)
Are there any programs to manipulate/figure out the CDs in changers?
--
marty
leisner@sdsp.mc.xerox.com
Member of the League for Programming Freedom
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