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Old 10-01-2006, 07:27 AM   #1
Yalla-One
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Registered: Oct 2004
Location: Norway
Distribution: Slackware, CentOS
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/dev/cdrom links to /dev/sg0 instead of /dev/sr0 -why?


For some reason, /dev/cdrom links to the character device rather than the block device, causing the "mount /dev/cdrom" to fail.

My 10-local.rules file has the following entry:
Code:
# Sony USB CD/DVD-RW
BUS=="usb", SYSFS{manufacturer}=="Sony", SYSFS{serial}=="DRX-510ULK_CED011664",
NAME="%k", GROUP="cdrom", MODE="0666", SYMLINK+="dvd cdrom"
For some reason this tags the character device sg0 rather than the block device, sr0 ...

Anyone?

-Y1
 
Old 10-01-2006, 05:33 PM   #2
pld
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Registered: Jun 2003
Location: Southern US
Distribution: Ubuntu 5.10
Posts: 206

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I am having the same issues here, and was wondering if anyone knew what might be happening? (My external usb dvdrw used to work fine).

Relevant dmesg section looks like this when I plug it in:
Code:
[17201921.372000] usb 3-4.1: new high speed USB device using ehci_hcd and address 11
[17201921.496000] scsi8 : SCSI emulation for USB Mass Storage devices
[17201921.496000] usb-storage: device found at 11
[17201921.496000] usb-storage: waiting for device to settle before scanning
[17201926.528000]   Vendor: HL-DT-ST  Model: DVDRRW GSA-2166D  Rev: 1.00
[17201926.528000]   Type:   CD-ROM                             ANSI SCSI revision: 00
[17201927.056000] sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw xa/form2 cdda tray
[17201927.056000] sr 8:0:0:0: Attached scsi CD-ROM sr0
[17201927.056000] sr 8:0:0:0: Attached scsi generic sg2 type 5
[17201927.056000] usb-storage: device scan complete
 
Old 10-01-2006, 05:53 PM   #3
ardya
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Registered: Mar 2006
Posts: 8

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Quote:
Originally Posted by Yalla-One
For some reason, /dev/cdrom links to the character device rather than the block device, causing the "mount /dev/cdrom" to fail.

My 10-local.rules file has the following entry:
Code:
# Sony USB CD/DVD-RW
BUS=="usb", SYSFS{manufacturer}=="Sony", SYSFS{serial}=="DRX-510ULK_CED011664",
NAME="%k", GROUP="cdrom", MODE="0666", SYMLINK+="dvd cdrom"
For some reason this tags the character device sg0 rather than the block device, sr0 ...

Anyone?

-Y1
Check udev.rules
 
Old 10-01-2006, 08:02 PM   #4
marnold
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Registered: Dec 2005
Distribution: Slackware64 14.1
Posts: 258

Rep: Reputation: 32
A bit of a shot in the dark here, but did you try

bus=="scsi"
 
  


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