Cant view Cdrom contents

Chrisroot · 04-07-2017, 11:35 AM

Hello all,

I am unable to view the cdrom contents which is my current problem.

here is the mount point----mount -t iso9660 -o ro /dev/sr0 /mnt/cdrom... Try to view content with ------ls -l /cdrom....

Output----Total 0.... there is content on the disc if I place it in a windows machine. Am i missing step here?

rtmistler · 04-07-2017, 11:38 AM

The mount point is:

Code:

/mnt/cdrom

Therefore you should do:

Code:

ls -l /mnt/cdrom

Chrisroot · 04-07-2017, 12:02 PM

Command ---- ls -l /mnt/cdrom

Output- Total 0 still.

I did forget to mention this is a fedora 24 if that matters. And the disc i am using uses rpm packing as well.

rtmistler · 04-07-2017, 12:23 PM

It may be blank and it may not really be mounted.

What is the output of the mount command WRT this drive? Which is to say, from a terminal, type "mount" and it will output some number of lines showing mounted devices on your system. Find the line related to /mnt/cdrom and please reply with the contents of that line, or indicate if there is no line.

Chrisroot · 04-07-2017, 12:33 PM

Command- Mount

Output- No indication of the drive being mounted on any line.

michaelk · 04-07-2017, 12:34 PM

Most desktops these days automatically mount the disc in /media/cdrom0 and open the file browser showing its contents or display some popup message asking what do you want to do.

Is the disc actually mounted?

Where there any warning or error messages when you entered the mount command?

How was the disc created? If created using Windows (depending on version) by default it probably is a UDF data disc version 2.6 which AFAIK never was supported under linux.

Chrisroot · 04-07-2017, 12:45 PM

Well I suppose it isnt mounted well not properly at least.
Nope there were no warnings when i entered the mount command.

Disc creation is unknown.

Command----lsblk

Output----
Name Maj:MIn RM Size RO TYPE Mountpoint
sr0 11:0 1 53.7m 0 0 rom blank

michaelk · 04-07-2017, 12:49 PM

Post the output of the command

sudo file -s /dev/sr0

Chrisroot · 04-07-2017, 12:55 PM

Command-- sudo file -s /dev/sr0

Output--/dev/sr0: ISO 9600 CD_ROM filesystem data "OCT_17_2013

rtmistler · 04-07-2017, 01:34 PM

Seems awkward that the size is 53.7m, however it shows as ISO9600 ROM.

Unfortunately one way I fix this very problem is to reboot. I randomly experience this on a Live boot system I have, not with the CD but with SD cards.

However also what I see is no activity in the system log when I insert or remove the drive, leaving me no choice but to reboot. I actually feel this is a hardware problem, for me this is.

In your case, when you insert the CD, do you see any new system logs which indicate that /dev/sr0 has been detected?

michaelk · 04-07-2017, 01:36 PM

It does seem awkward...

Quote:

And the disc i am using uses rpm packing as well.

rpm packing? It looks like a regular ISO9660 data disc. I assumed you used sudo to mount it?

sudo mount -t iso9660 /dev/sr0 /mnt/cdrom

Chrisroot · 04-07-2017, 01:41 PM

Actually i mounted it with this command-----mount -t iso9660 -o ro /dev/sr0 /mnt/cdrom

I just did the command--sudo mount -t iso9660 /dev/sr0 /mnt/cdrom

Output- mount: /dev/sr0 is write-protected, mounting read-only
mounted: no medium found on /dev/sr0

Chrisroot · 04-07-2017, 02:00 PM

I just realized that this is a DVD-RW drive, that probably has something to do with it.

rtmistler · 04-07-2017, 02:02 PM

Quote:

Originally Posted by Chrisroot

Actually i mounted it with this command-----mount -t iso9660 -o ro /dev/sr0 /mnt/cdrom

I just did the command--sudo mount -t iso9660 /dev/sr0 /mnt/cdrom

Output- mount: /dev/sr0 is write-protected, mounting read-only
mounted: no medium found on /dev/sr0

The statement that no medium was found on /dev/sr0 is the problem. At least at the present point.

Shadow_7 · 04-07-2017, 04:31 PM

$ sudo apt-get install libcdio-utils
$ cd-info

Maybe there's something special about the disc.