[SOLVED] Attaching Dell USB DVD/CD Drive Issues

jfriordan · 07-19-2019, 12:37 PM

Hello!
I have a Dell Latitude E5570 laptop with Enterprise6 kernel 2.6.32-754.17.1.el6.x86_64 and I am trying to attach and mount a Dell USB DVD/CD drive. I don't see anything in /dev that would indicate I could mount the device. I have rebooted with the device attached, I have checked the BIOS to make sure USB support is enabled. I can see information about the device in "dmesg" "lsusb" and /var/log/messages. But nothing indicates that the device is ready for use. Please see examples of the commands I ran. I must be missing something. Thank you in advance John.

Code:

#dmesg
usb 1-1: new high speed USB device number 6 using xhci_hcd
usb 1-1: New USB device found, idVendor=413c, idProduct=9016
usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1: Product: Dell DVD+/-RW Drive DW316
usb 1-1: Manufacturer: Dell Inc.
usb 1-1: SerialNumber: KX7Z7PG2305
usb 1-1: configuration #1 chosen from 1 choice

Code:

#lsusb
Bus 001 Device 006: ID 413c:9016 Dell Computer Corp.

Code:

/var/log/messages shows the following after I plug it in:
Jul 19 12:13:33 sa-foo kernel: usb 1-1: new high speed USB device number 5 using xhci_hcd
Jul 19 12:13:33 sa-foo kernel: usb 1-1: New USB device found, idVendor=413c, idProduct=9016
Jul 19 12:13:33 sa-foo kernel: usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Jul 19 12:13:33 sa-foo kernel: usb 1-1: Product: Dell DVD+/-RW Drive DW316
Jul 19 12:13:33 sa-foo kernel: usb 1-1: Manufacturer: Dell Inc.
Jul 19 12:13:33 sa-foo kernel: usb 1-1: SerialNumber: KX7Z7PG2305
Jul 19 12:13:33 sa-foo kernel: usb 1-1: configuration #1 chosen from 1 choice
Jul 19 12:13:33 sa-foo audispd: node=sa-.local type=PATH msg=audit(1563552813.603:709): item=3 name="../bus/usb/001/005" nametype=UNKNOWN

Code:

#fdisk -l
(Only shows /dev/sda, /dev/sda1, /dev/sda2, /dev/sda3 and accompanying volume groups and logical volumes)

Code:

/etc/udev/rules.d/70-persistent-cd.rules:
#DVD+_-RW_DW316 (pci-0000:00:14.0-usb-0:3:1.0-scsi-0:0:0:0)
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="Dell_DVD+_-RW_DW316_KX7Z7PG2305-0:0", SYMLINK+="cdrom", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="Dell_DVD+_-RW_DW316_KX7Z7PG2305-0:0", SYMLINK+="cdrw", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="Dell_DVD+_-RW_DW316_KX7Z7PG2305-0:0", SYMLINK+="dvd", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="Dell_DVD+_-RW_DW316_KX7Z7PG2305-0:0", SYMLINK+="dvdrw", ENV{GENERATED}="1"

scasey · 07-19-2019, 01:23 PM

I'd expect it to just work when you insert a disc.
What happens when you do that?

fdisk isn't going to see an empty disk drive.

jfriordan · 07-19-2019, 01:41 PM

Hi Sean,

Nothing gets logged when I insert or remove the CD. Only when I unplug the device or reboot.

Thanks for the reply!
John

michaelk · 07-19-2019, 02:40 PM

If the drive is recognized that I would expect it to have a device ID of /dev/sr0 (if it was the only DVD installed). If you do then the drive is ready to go.

I have internal drive but I also have USB drive that I connect to my CentOS 6 system. Here are my persistent rules.

Code:

# DVD_Writer_555r (pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0)
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="HP_DVD_Writer_555r_00101016400047C85-0:0", SYMLINK+="cdrom1", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="HP_DVD_Writer_555r_00101016400047C85-0:0", SYMLINK+="cdrw1", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="HP_DVD_Writer_555r_00101016400047C85-0:0", SYMLINK+="dvd1", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*", ENV{ID_SERIAL}=="HP_DVD_Writer_555r_00101016400047C85-0:0", SYMLINK+="dvdrw1", ENV{GENERATED}="1"

What type of disk are you trying to read? If you are not running a desktop nothing happens. If you are, then Gnome's default settings should detect that a disk is inserted and I would expect it to be automounted and/or some window to popup.

Filesystems are mounted not physical devices.

jfriordan · 07-19-2019, 02:45 PM

Sean,

Thank you for trying to help me. The light bulb went off in my head. This image was from a DoD iso and I started to look for a STIG that might be causing it. Sure enough that was the issue. The was a config file in /etc/modprobe.d that did the following: "install usb-storage /bin/true" Once I commented that out and rebooted I now have my /dev/scd0 device.

Sorry to waist your time Sean.

Thanks again
John