Can't mount CDROM/CDRW/DVDROM/FLOPPY

Matir · 07-13-2005, 05:31 PM

Your output for /dev/hdc looks just fine, as far as I can tell.

Please do 'dmesg | grep hdc' to see if there are any related messages in there. Post output if you have any questions about it.

Also, you might want to change your /etc/fstab from iso9660 to 'auto' for the filesystem on your DVD (and, optionally, CD) drive(s). DVDs actually use the udf filesystem, though most also have iso9660 behind that (but not all do, as far as I know).

kriidler · 07-13-2005, 05:43 PM

Quote:

Originally posted by Matir
Your output for /dev/hdc looks just fine, as far as I can tell.
Please do 'dmesg | grep hdc' to see if there are any related messages in there. Post output if you have any questions about it.

I was supposed to get this, right?

Code:

# dmesg | grep hdc
    ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
hdc: DVD-ROM BDV316C, ATAPI CD/DVD-ROM drive
hdc: attached ide-cdrom driver.
hdc: ATAPI 1X DVD-ROM drive, 512kB Cache, UDMA(33)
/dev#

Quote:

Also, you might want to change your /etc/fstab from iso9660 to 'auto' for the filesystem on your DVD (and, optionally, CD) drive(s). DVDs actually use the udf filesystem, though most also have iso9660 behind that (but not all do, as far as I know). [/B]

Ok done.
How do refresh without rebooting?

Matir · 07-13-2005, 06:55 PM

There is no "refresh" needed. Just try to mount again.

kriidler · 07-13-2005, 07:22 PM

Hi, thanks.
CD reading seems to be fine, the dvd's still out cold

I get lights, but no action from it!

koloth · 07-14-2005, 08:28 AM

Try this : mount the dvd as said before, after you do that run tjis command: tail /var/log/messages , it should list the last ten lines of the system log which will contain i hope info about what goes wrong with the dvd mount. just post the outcome!

kriidler · 07-14-2005, 01:27 PM

Quote:

Originally posted by koloth
Try this : mount the dvd as said before, after you do that run tjis command: tail /var/log/messages , it should list the last ten lines of the system log which will contain i hope info about what goes wrong with the dvd mount. just post the outcome!

Hi koloth,
I tried that and got:

Code:

# /var/log/messages
-bash: /var/log/messages: Permission denied

So I changed the properties of /var/log/messages to "executable" and got this:

Code:

# /var/log/messages
-bash: /var/log/messages: Text file busy
#

I then opened it in kwrite. so here's the last 10 lines:

Code:

Jul 14 20:08:39 kriidlerspc kernel: printer.c: usblp0: USB Bidirectional printer dev 2 if 1 alt 0 proto 2 vid 0x03F0 pid 0x3D11
Jul 14 20:08:39 kriidlerspc kernel: printer.c: v0.13: USB Printer Device Class driver
Jul 14 20:08:50 kriidlerspc logger: /etc/rc.d/rc.hotplug start (exiting script)
Jul 14 20:08:50 kriidlerspc sshd[1103]: Server listening on 0.0.0.0 port 22.
Jul 14 20:11:53 kriidlerspc kernel: NET4: Linux IPX 0.47 for NET4.0
Jul 14 20:11:53 kriidlerspc kernel: IPX Portions Copyright (c) 1995 Caldera, Inc.
Jul 14 20:11:53 kriidlerspc kernel: IPX Portions Copyright (c) 2000, 2001 Conectiva, Inc.
Jul 14 20:11:54 kriidlerspc kernel: NET4: AppleTalk 0.18a for Linux NET4.0
Jul 14 20:18:13 kriidlerspc kernel: cdrom: open failed.
Jul 14 20:18:17 kriidlerspc last message repeated 9 times

This what you were looking for?
k

Matir · 07-14-2005, 01:48 PM

It does mention in there that it could not open the cdrom drive, which is odd.

Currently,
/dev/dvd should be a symlink to /dev/hdc, correct?
/etc/fstab should point to /dev/dvd for that drive, correct?
/etc/fstab should have the "user" option for mounting it.

What error message, precisely, do you get when attempting to mount it right now?

kriidler · 07-14-2005, 02:37 PM

Hi Matir,

Quote:

/dev/dvd should be a symlink to /dev/hdc, correct?

Yep.

Quote:

/etc/fstab should point to /dev/dvd for that drive, correct?

the relevant line:

Code:

/dev/dvd         /mnt/dvd         auto        noauto,user,ro   0   0

Quote:

/etc/fstab should have the "user" option for mounting it.

Yep.

Quote:

What error message, precisely, do you get when attempting to mount it right now?

Code:

# mount /dev/hdc /mnt/dvd
mount: block device /dev/hdc is write-protected, mounting read-only
mount: No medium found
# mount /dev/dvd /mnt/dvd
mount: block device /dev/hdc is write-protected, mounting read-only
mount: No medium found
#

Matir · 07-14-2005, 02:44 PM

Since the device has been recreated several times, could you please post the output of

Code:

ls -l /dev/hdc

again?

I'm wondering if the system is having a hard time sending it commands for some reason. Naturally, you have a (known) good cd or dvd in the drive?

kriidler · 07-14-2005, 03:14 PM

Quote:

Originally posted by Matir
Since the device has been recreated several times, could you please post the output of

Code:

ls -l /dev/hdc

again?

Code:

# ls -l /dev/hdc brw-rw-rw- 1 root disk 22, 0 2005-07-14 00:02 /dev/hdc #

Quote:

I'm wondering if the system is having a hard time sending it commands for some reason. Naturally, you have a (known) good cd or dvd in the drive?

Yep, I've tried it with a comercially available data cd, a commercial data dvd and a commercial dvd.
k

Matir · 07-14-2005, 03:29 PM

Hrrm, very odd. Almost looks the same as my install, except my permissions are a tad more restrictive. (brw-rw----)

I doubt this will have much effect, but please try doing it as 'mount /mnt/dvd' by itself, without specifying the device.

kriidler · 07-14-2005, 03:56 PM

No luck

Got "mount: No meduim found"

Matir · 07-14-2005, 04:02 PM

Hrrm. I'm beginning to become stumped with this one. Is the drive known to work? (I.e., no hardware issues, checked cables, etc.)

Does the drive spin at all when you try to mount it?

kriidler · 07-14-2005, 04:37 PM

Hi Matir, Yes the drive does work, or at least did in the beginning, just after I moved from windows. It stopped working when I had to re-install Mandrake 10.0 the first time. Since then, I've not been able to get it to work with any distro. I've tried SUSE 9.2, Knoppix, Ubuntu (LiveCD and Installed). They all see the dvd, but refuse to read/mount it.
k

Matir · 07-14-2005, 04:40 PM

Can you boot from that drive?