OK, for several years I have not had a /dev/cdrom. My workstation has
an internal cd-rom drive, which gets mapped to /dev/hda, and an external
DVD+R drive, which is mapped to /dev/sr0. When I look
at /etc/udev/rules.d/70-persistent-cd.rules I see:
camille rules.d # cat 70-persistent-cd.rules
# LITE-ON_COMBO_SOHC-5236K (pci-0000:00:1f.1-ide-0:0)
ENV{ID_CDROM}=="?*", ENV{ID_PATH}=="pci-0000:00:1f.1-ide-0:0", SYMLINK
+="cdrom", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*", ENV{ID_PATH}=="pci-0000:00:1f.1-ide-0:0", SYMLINK
+="cdrw", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*", ENV{ID_PATH}=="pci-0000:00:1f.1-ide-0:0", SYMLINK
+="dvd", ENV{GENERATED}="1"
# LITE-ON_COMBO_SOHC-5236K (pci-0000:00:1f.1-ide-0:0)
ENV{ID_CDROM}=="?*", ENV{ID_PATH}=="pci-0000:00:1f.1-ide-0:0", SYMLINK
+="cdrom1", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*", ENV{ID_PATH}=="pci-0000:00:1f.1-ide-0:0", SYMLINK
+="cdrw1", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*", ENV{ID_PATH}=="pci-0000:00:1f.1-ide-0:0", SYMLINK
+="dvd1", ENV{GENERATED}="1"
# CD.DVDW_SD-R5372 (pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0)
ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0", SYMLINK
+="cdrom2", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0", SYMLINK
+="cdrw2", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0", SYMLINK
+="dvd2", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0", SYMLINK
+="dvdrw2", ENV{GENERATED}="1"
# CD.DVDW_SD-R5372 (pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0)
ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="TOSHIBA_CD.DVDW_SD-R5372_200503021764-0:0", SYMLINK
+="cdrom3", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="TOSHIBA_CD.DVDW_SD-R5372_200503021764-0:0", SYMLINK
+="cdrw3", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="TOSHIBA_CD.DVDW_SD-R5372_200503021764-0:0", SYMLINK
+="dvd3", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="TOSHIBA_CD.DVDW_SD-R5372_200503021764-0:0", SYMLINK
+="dvdrw3", ENV{GENERATED}="1"
# CD.DVDW_SD-R5372 (pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0)
ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0", SYMLINK
+="cdrom4", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0", SYMLINK
+="cdrw4", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0", SYMLINK
+="dvd4", ENV{GENERATED}="1"
ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0", SYMLINK
+="dvdrw4", ENV{GENERATED}="1"
# LITE-ON_COMBO_SOHC-5236K (pci-0000:00:1f.1)
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1f.1", SYMLINK+="cdrom5", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1f.1", SYMLINK+="cdrw5", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_PATH}=="pci-0000:00:1f.1", SYMLINK+="dvd5", ENV{GENERATED}="1"
# CD_DVDW_SD-R5372 ()
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="TOSHIBA_CD_DVDW_SD-R5372_200503021764-0:0", SYMLINK
+="cdrom6", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="TOSHIBA_CD_DVDW_SD-R5372_200503021764-0:0", SYMLINK
+="cdrw6", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="TOSHIBA_CD_DVDW_SD-R5372_200503021764-0:0", SYMLINK
+="dvd6", ENV{GENERATED}="1"
SUBSYSTEM=="block", ENV{ID_CDROM}=="?*",
ENV{ID_SERIAL}=="TOSHIBA_CD_DVDW_SD-R5372_200503021764-0:0", SYMLINK
+="dvdrw6", ENV{GENERATED}="1"
LITE-ON_COMBO_SOHC-5236K is my internal drive, which SHOULD be mapped
to /dev/cdrom. But it's not:
camille rules.d # ls /dev/cdrom
ls: cannot access /dev/cdrom: No such file or directory
Why is it not being mapped correctly? Is the rule above not correct?
I've tried to read tutorials about writing udev rules, but the example
rules in the tutorials look nothing like the above rules, and I didn't
write those. I think they were created when udev was installed...
