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I am a newbie at Linux.

Next to a hardware power supply replacement I can't use anymore the
CDROM drive.I am running Mandrake 8.2 and the CDROM is mounted at boot
with le following line:

[root@dev]# grep cdrom /etc/fstab
/dev/hdc /mnt/cdrom iso9660
ro,iocharset=iso8859-15,nosuid,noauto,exec,user,nodev 0 0

When I try to list either /dev/cdrom or /dev/hdc I have the message :

[root@dev]# ll /dev/hdc
ls: /dev/hdc: Aucun fichier ou répertoire de ce type
[root@dev]# ll /dev/cdrom
ls: /dev/cdrom: Aucun fichier ou répertoire de ce type

How can I restore this device file? and what should I do?

Thanks.

Hi,

> Next to a hardware power supply replacement I can't use anymore the
> CDROM drive.I am running Mandrake 8.2 and the CDROM is mounted at boot
> with le following line:

> [root@dev]# grep cdrom /etc/fstab
> /dev/hdc /mnt/cdrom iso9660
> ro,iocharset=iso8859-15,nosuid,noauto,exec,user,nodev 0 0

> When I try to list either /dev/cdrom or /dev/hdc I have the message :

> [root@dev]# ll /dev/hdc
> ls: /dev/hdc: Aucun fichier ou répertoire de ce type
> [root@dev]# ll /dev/cdrom
> ls: /dev/cdrom: Aucun fichier ou répertoire de ce type

> How can I restore this device file? and what should I do?

Sorry, I don't speak french, so I don't understand the error messages.
But one thing for sure: You don't list the device files. Instead, you do

$ mount /mnt/cdrom
$ ls /mnt/cdrom

and there the contents of the files will appear, not in the device
files (which will rather be an abstract representation of the cdrom as
total).

So long,
Thomas

thierry.atc <thierry.atc@noos.fr> wrote:
> [root@dev]# ll /dev/hdc

You don't list the device, try ls /mnt/cdrom

Davide

Thomas Richter wrote:
> Hi,
>
>
>>Next to a hardware power supply replacement I can't use anymore the
>>CDROM drive.I am running Mandrake 8.2 and the CDROM is mounted at boot
>>with le following line:
>>
>
>>[root@dev]# grep cdrom /etc/fstab
>>/dev/hdc /mnt/cdrom iso9660
>>ro,iocharset=iso8859-15,nosuid,noauto,exec,user,nodev 0 0
>>
>
>>When I try to list either /dev/cdrom or /dev/hdc I have the message :
>>
>
>>[root@dev]# ll /dev/hdc
>>ls: /dev/hdc: Aucun fichier ou répertoire de ce type
>>[root@dev]# ll /dev/cdrom
>>ls: /dev/cdrom: Aucun fichier ou répertoire de ce type
>>
>
>>How can I restore this device file? and what should I do?
>>
>
> Sorry, I don't speak french, so I don't understand the error messages.
> But one thing for sure: You don't list the device files. Instead, you do
>
> $ mount /mnt/cdrom
> $ ls /mnt/cdrom
>
> and there the contents of the files will appear, not in the device
> files (which will rather be an abstract representation of the cdrom as
> total).
>
> So long,
> Thomas
>
>

Thank you for your advice. I tried that but it says:

[root@dev]# mount /mnt/cdrom
mount : le périphérique spécial /dev/hdc n'existe pas.

(translation: /dev/hdc deice does'nt exist.)

> When I try to list either /dev/cdrom or /dev/hdc I have the message :
>
> [root@dev]# ll /dev/hdc
> ls: /dev/hdc: Aucun fichier ou répertoire de ce type

My french sucks, so I'm kinda in the blind here.

Does "ls /dev/hd?" show up anything?
is the device node gone? recreate it then.
(MAKEDEV)

> [root@dev]# ll
> /dev/cdrom
> ls: /dev/cdrom: Aucun fichier ou répertoire de ce type

that is probably just a link.
Have you done a filesystem check on

> How can I restore this device file? and what should I do?

MAKEDEV, fsck?

Eric

Hi,

> [root@dev]# mount /mnt/cdrom
> mount : le périphérique spécial /dev/hdc n'existe pas.

> (translation: /dev/hdc deice does'nt exist.)

Ok, so where's your CDROM? Is it ATAPI/IDE (I assume yes). If so, is it:

primary/secondary or master/slave? /dev/hdc is the master on the secondary
IDE channel. Maybe it's jumpered in another way.

If you run with ide-scsi, you should change this to /etc/scd0.

All these changes have to go to /etc/fstab, btw.

Greetings,
Thomas

Thomas Richter wrote:
> Hi,
>
>
>>[root@dev]# mount /mnt/cdrom
>>mount : le périphérique spécial /dev/hdc n'existe pas.
>>
>
>>(translation: /dev/hdc deice does'nt exist.)
>>
>
> Ok, so where's your CDROM? Is it ATAPI/IDE (I assume yes). If so, is it:
>
> primary/secondary or master/slave? /dev/hdc is the master on the secondary
> IDE channel. Maybe it's jumpered in another way.
>
> If you run with ide-scsi, you should change this to /etc/scd0.
>
> All these changes have to go to /etc/fstab, btw.
>
> Greetings,
> Thomas
>
>
The CDROM is ATAPI but I don't know if it is attached to the
primary/secondary or master/slave because I haven't fix it and I can't
check it because I can't open it (it doesn't belongs to me).

Therefore, I have:

[root@dev]# ll /dev/hd?
lr-xr-xr-x 1 root root 32 nov 10 13:45 /dev/hda ->
ide/host0/bus0/target0/lun0/disc

should I try to make a symbolic link with between /dev/hda and /dev/cdrom ?

Thanks a lot for your help.
Thierry

Hello

thierry.atc (<thierry.atc@noos.fr>) wrote:

> The CDROM is ATAPI but I don't know if it is attached to the
> primary/secondary or master/slave because I haven't fix it and I can't
> check it because I can't open it (it doesn't belongs to me).
>
> Therefore, I have:
>
> [root@dev]# ll /dev/hd?
> lr-xr-xr-x 1 root root 32 nov 10 13:45 /dev/hda ->
> ide/host0/bus0/target0/lun0/disc
>
> should I try to make a symbolic link with between /dev/hda and
> /dev/cdrom ?

No, /dev/hda is your hard disk. You are using devfs, which means that
device files are not stored permanently in the /dev directory on your
hard disk but are created dynamically when the drivers are loaded. I
think the symbolic links you are looking for should be made by the
devfsd program. You also should find out whether ide-scsi emulation is
activated for the drive:

Type cdrecord -scanbus (the device will be listed if you use ide-scsi
emulation)
or, if cdrecord is not installed, type cat /proc/scsi/scsi.

Also check your bootloader confguration. IIRC, Mandrake 8.2 uses lilo as
default, so open /etc/lilo.conf and look for lines starting with
append.

I think if you use devfs you can also access cdrom devices by using
device files located in /dev/cdroms.

best regards
Andreas Janssen

--
Andreas Janssen
andreas.janssen@bigfoot.com
PGP-Key-ID: 0xDC801674
Registered Linux User #267976

Andreas Janssen wrote:
> Hello
>
> thierry.atc (<thierry.atc@noos.fr>) wrote:
>
>
>>The CDROM is ATAPI but I don't know if it is attached to the
>>primary/secondary or master/slave because I haven't fix it and I can't
>>check it because I can't open it (it doesn't belongs to me).
>>
>>Therefore, I have:
>>
>>[root@dev]# ll /dev/hd?
>>lr-xr-xr-x 1 root root 32 nov 10 13:45 /dev/hda ->
>>ide/host0/bus0/target0/lun0/disc
>>
>>should I try to make a symbolic link with between /dev/hda and
>>/dev/cdrom ?
>>
>
> No, /dev/hda is your hard disk. You are using devfs, which means that
> device files are not stored permanently in the /dev directory on your
> hard disk but are created dynamically when the drivers are loaded. I
> think the symbolic links you are looking for should be made by the
> devfsd program. You also should find out whether ide-scsi emulation is
> activated for the drive:
>
> Type cdrecord -scanbus (the device will be listed if you use ide-scsi
> emulation)
> or, if cdrecord is not installed, type cat /proc/scsi/scsi.
>
> Also check your bootloader confguration. IIRC, Mandrake 8.2 uses lilo as
> default, so open /etc/lilo.conf and look for lines starting with
> append.
>
> I think if you use devfs you can also access cdrom devices by using
> device files located in /dev/cdroms.
>
> best regards
> Andreas Janssen
>
>

The problem was a bad connector connection betwen the primary disk to
the primary/secondary where the CDROM was attached.
After pluging the map connector into the right connector, ca marche!

Every works fine now and thank you all of you.
Thierry

On Wed, 12 Nov 2003 14:04:36 +0100, "thierry.atc" <thierry.atc@noos.fr> wrote:

> ext to a hardware power supply replacement I can't use anymore the
> CDROM drive.

.... if you replaced something in the box and the cdrom
doesnt work, i'd check the cabling
..
--
/// Michael J. Tobler: motorcyclist, surfer, skydiver, \\\
\\\ and author: "Inside Linux", "C++ HowTo", "C++ Unleashed" ///