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Old 07-23-2003, 10:58 AM   #1
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/dev/cdrom DISAPPEARED!!

I am a problem: my /dev/cdrom disappeared. I just installed ad USB storage disk which is working well but I am still not my cdrom.
To find my storage disk I did:
sfdisk -l /dev/sda
sfdisk -l /dev/sdb

my disk was in /dev/sdb so I mounted it. In /dev/sda
there something not readible (the cdrom?).
My cdrom/dvd reader is still there. The /proc/scsi/scsi is:

Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: STM(CMG) Model: FlashCardReader Rev: 1.28
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 00
Vendor: MATSHITA Model: UJDA720 DVD/CDRW Rev: 1.00
Type: CD-ROM ANSI SCSI revision: 02
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: FUJITSU Model: MHR2020AT Rev: 40BA
Type: Direct-Access ANSI SCSI revision: 02

How can I create /dev/cdrom? Is it possible?

Thanks in advance,

Old 07-23-2003, 11:21 AM   #2
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/dev/cdrom is a symbolic link to the actual devices. For instance, mine is connected as slave on ide2, so that device is /dev/hdd.

So in my case, /dev/cdrom points to /dev/hdd.

# Managing drives
LNAG - Accessing my drives
Rute - Device Mounting
Old 07-23-2003, 12:00 PM   #3
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I am using RH9 in a toshiba satellite 3000-400.
I tryed to mount /dev/hdd in /mnt/cdrom

mount -t auto /dev/hdd /mnt/cdrom

but it told me that /dev/hdd is not a device with bloks (šnon Že un dispositivo a blocchiš if you know italian).

Do you have any idea who to find to which device correspond the CD reader from the information from /proc/scsi/scsi?

Old 07-23-2003, 11:59 PM   #4
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Type dmesg at the console. Scroll through the list and you should see your CD-ROM drives. Yes you can make /dev/cdrom. Just login as root or su and do a mkdir /dev/cdrom. Also read documentation on devfsd if you are using it. It will make /dev/cdrom if it is setup properly.
Old 07-24-2003, 05:30 AM   #5
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Thank you for you suggestion. In fact I found my CDROM in /dev/hdc. But I can't still mount the CDROM. When I try to moount it by the console it gieve me:

[root@abulafia root]# mount -t iso9660 /dev/hdc /mnt/cdrom
mount: fs type uncorrect, no valid option, superblock on /dev/hdc damaged,
or too many file system monted
(could this be the IDE device where you in fact use
ide-scsi so that sr0 or sda or so is needed?)

In fact The CDROM is not mounted 'cause at the boot the system erase me always /dev/cdrom I linked to /dev/hdc
(ln -s /dev/hdc /dev/cdrom)
I am not using devfsd and it is not iinstalled, do I may?
Thank a lot for the moment,

Old 07-24-2003, 12:05 PM   #6
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I have more information. I think I lost the drivers for the CDROM.
If I analyze the system with kudzu I have the follow message

kudzu -p
class: CDROM
bus: SCSI
detached: 0
device: scd0
driver: ignore
desc: "Matshita UJDA720 DVD/CDRW"
host: 2
id: 0
channel: 0
lun: 0
generic: sg2

How can I put new drivers?



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