Re: [Nolug] /dev/scd0 is not a valid block device

From: Scott Harney <scotth_at_scottharney.com>
Date: Mon, 20 Oct 2003 08:09:49 -0500
Message-ID: <87fzho12ea.fsf@zenarcade.local.lan>

Scott Harney <scotth@scottharney.com> writes:

> Alex <alex@boxchain.com> writes:
>
> Try /dev/sr0 . That's how my cdrw is mounted. Perhaps the scsi block cd
> drive dates back to 1994. I don't know the answer to that one.
  ^^^^^ device

doh!

>
> How I knew to attach using /dev/sr0 (in addition to cd burner howto
> info)
> bash-2.05b$ dmesg | grep sr
> Attached scsi CD-ROM sr0 at scsi0, channel 0, id 1, lun 0
> sr0: scsi3-mmc drive: 16x/16x writer cd/rw xa/form2 cdda tray
>
>
>
>> OK, I really don't understand how block devices work. I have an
>> external CD burner, (1394), that works great through cdrecord. I
>> can't seem to mount the thing, though. I used to be able to, but
>> after a combination of unplugging and replugging the cord, compiling a
>> new kernel, and other random system modifications, I get this when
>> trying to mount
>>
>> I had set all this up to work about a year ago, and I don't remember
>> how I did it, because I didn't understand what I did. So a few
>> questions:
>>
>> --How can the date be 1994...I built this system in 2002.
>> --How can I make sense of what is being used, and how, in the /dev
>> structure?
>> --Is there a set of instructions for NON-programmers that explains this?
>>
>> TIA...A
>>
>> root ~# mount /mnt/cdwrite/
>> mount: /dev/scd0 is not a valid block device
>>
>> root ~# grep cdwr /etc/fstab
>> /dev/scd0 /mnt/cdwrite iso9660 noauto,user,rw 0 0
>>
>> root ~# cdrecord -scanbus
>> Cdrecord 1.11a24 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jörg Schilling
>> Linux sg driver version: 3.1.22
>> Using libscg version 'schily-0.6'
>> scsibus1:
>> 1,0,0 100) 'SONY ' 'CD-RW CRX160E ' '1.0e' Removable CD-ROM
>>
>> root ~# ll /dev/scd0
>> brw-r----- 1 root disk 11, 0 Jul 18 1994 /dev/scd0
>>
>> --
>> Alex McKenzie alex@boxchain.com http://www.boxchain.com
>>
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>> nolug@nolug.org
>>
>
> --
> Scott Harney<scotth@scottharney.com>
> "...and one script to rule them all."
> gpg key fingerprint=7125 0BD3 8EC4 08D7 321D CEE9 F024 7DA6 0BC7 94E5
> ___________________
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> nolug@nolug.org
>

-- 
Scott Harney<scotth@scottharney.com>
"...and one script to rule them all."
gpg key fingerprint=7125 0BD3 8EC4 08D7 321D CEE9 F024 7DA6 0BC7 94E5
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Received on 10/20/03

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