CD/DVD won't mount/read?

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CD/DVD won't mount/read?

Postby 537 on Wed Nov 21, 2012 5:02 am

I can't see what's in my CD/DVD. I wouldn't be able to mount it like I would do to my hard disks, example:

Image

But I do see it here;

Image

What do I do? I want to see what's in my CD/DVD. I want to be able to do that, but it just wouldn't work, ever since I switched to Linux Mint 14.

Anyone?
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Re: CD/DVD won't mount/read?

Postby cwsnyder on Wed Nov 21, 2012 6:44 am

First, have you tried it with a CD or DVD in the drive, or just with an empty drive?

What is the result of entering the following in a terminal?
Code: Select all
cat /etc/fstab
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Re: CD/DVD won't mount/read?

Postby 537 on Wed Nov 21, 2012 7:47 am

cwsnyder wrote:First, have you tried it with a CD or DVD in the drive, or just with an empty drive?

What is the result of entering the following in a terminal?
Code: Select all
cat /etc/fstab

I've tried it with both.

Code: Select all
K2X ~ # cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sdb2 during installation
UUID=06017a22-bc68-4c37-8607-9ceff37c6711 /               ext4    errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
UUID=42cda712-6a58-4557-b5ee-8367273b4487 none            swap    sw              0       0
K2X ~ #
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Re: CD/DVD won't mount/read?

Postby remoulder on Wed Nov 21, 2012 12:09 pm

cwsnyder wrote:cat /etc/fstab

fstab is not relevant here, cd/dvd drives do not use fstab and the device is already shown as mounted at /dev/sr0
[Edit] your original post and add [SOLVED] once your question is resolved.

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Re: CD/DVD won't mount/read?

Postby cwsnyder on Wed Nov 21, 2012 1:49 pm

When you put a CD or DVD in the drive, is or is not the disk showing in your tree to the left side of your file manager?

Have you tried in a terminal window entering ls /media to check that there is a cdrom folder? If there isn't such a mount point, create the folder by entering sudo mkdir /media/cdrom then enter sudo mount /dev/sr0 /media/cdrom and see if your CD or DVD contents are available in the new folder /media/cdrom.
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Re: CD/DVD won't mount/read?

Postby 537 on Thu Nov 22, 2012 8:04 am

cwsnyder wrote:When you put a CD or DVD in the drive, is or is not the disk showing in your tree to the left side of your file manager?

Have you tried in a terminal window entering ls /media to check that there is a cdrom folder? If there isn't such a mount point, create the folder by entering sudo mkdir /media/cdrom then enter sudo mount /dev/sr0 /media/cdrom and see if your CD or DVD contents are available in the new folder /media/cdrom.

No, it doesn't. It only shows in "Disks."

Code: Select all
khalyd@K2X ~ $ ls /media
cdrom  dvd  khalyd


I've already tried to do that, when I do, it says this:

Code: Select all
khalyd@K2X ~ $ sudo mount /dev/sr0 /media/cdrom
mount: block device /dev/sr0 is write-protected, mounting read-only
mount: /dev/sr0: can't read superblock
khalyd@K2X ~ $
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Re: CD/DVD won't mount/read?

Postby 537 on Sun Nov 25, 2012 1:29 pm

Anyone?
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Re: CD/DVD won't mount/read?

Postby Frederator on Tue Nov 27, 2012 12:51 pm

I had the exact same problem and followed cwsnyder's advice, creating a missing /cdrom folder and mounting to that, which resulted in the same terminal output as 537 except without "mount: /dev/sr0: can't read superblock". My cd drive then was showing up in file manager and reading the disk contents.
I'm a noob too, but a google search for "mount: /dev/sr0: can't read superblock" returned a lot of info on that particular problem and maybe you can find some answers there.
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Re: CD/DVD won't mount/read?

Postby DrHu on Tue Nov 27, 2012 3:10 pm

Whenever the OS cannot read a superblock, it is either corruption of that block or it is being wriong detected by the OS
https://linuxexpresso.wordpress.com/201 ... in-ubuntu/

You will have to use tools available to check the status/readability of your CD
--and consider for yourself how you have formatted that device (from windows or other OS, and what format was being used, and maybe which application wrote the CD), before concluding that it is a Linux problem instead of a compatibility or other issue..

If you need to check a disk (hard drive or CD/DVD) you could use a test suit..
http://www.ultimatebootcd.com/
--this is a boot test CD, if that loads or a Linux Mint CD loads (the one you used to install your system..), then it is your media that is the problem
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Re: CD/DVD won't mount/read?

Postby tdietz2558 on Tue Feb 26, 2013 1:18 pm

I am having a similar issue. If I start my system without a CD in the cd/dvd drive, no matter what I do (and I tried all of the previously suggested commands etc.), Mint won't read the disk. However, if I reboot with the CD in the drive, things seem to work fine.

Any thoughts? Am a bit of a newbie to Linux and Mint, but it is great so far - even managed to get Netflix to play streaming movies and was able to get them output over the HDMI port with stereo sound. I was impressed since Wine running Windows Firefox and Silverlight were all involved in making this work. With that level of sophistication in Linux and Mint, I can't believe solving a simple CD/DVD drive issue is causing me grief :oops:
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Re: CD/DVD won't mount/read?

Postby cwsnyder on Wed Feb 27, 2013 8:23 pm

@tdietz2558, You may be having a BIOS related setting problem, rather than a Linux problem. What you are saying is that your Linux install and/or machine is not detecting a change in status on your drive. This can be a hardware or a BIOS problem, but is not likely to be exclusively Linux unless you are using a non-standard drive (neither IDE, SATA, nor SCSI).
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Re: CD/DVD won't mount/read?

Postby tdietz2558 on Mon Mar 04, 2013 11:34 am

The drive is a standard drive, i.e., was installed in the laptop when I bought it, and works fine under Windows. I will look into the options there might be in the BIOS regarding this drive and see if any that might be available cause things to work more reliably. Thanks for the suggestion.
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