Input/Output Problem

Printable View

April 28th, 2006, 02:53 AM
aura2

Input/Output Problem

When I execute the following commands I get this error:
mount /dev/cdrom
cp -r /mnt/cdrom /home/user/foo
It says something about Input/Output error (sorry I would put the exact error message but i'll explain why in a minute)
When I try to do it again it says:
omitting '/mnt/cdrom'

I don't understand why it isn't working, it was fine a few hours ago. The next problem I have is when I try to mount a burnt music cd it says :
mount: block device /dev/hdd is write-protected mounting as read-only (understandable)
mount: you must specify the filesystem type (I don't know what type)

Then I do it again and it says this:
Wrong fs type, bad option, bad superblock on dev/hdc
missing codepage or other error

I will try to get the exact error for the Input/Output again, but in the mean time can anyone help me out?
April 28th, 2006, 03:49 AM
preacherman481

Quote:

don't understand why it isn't working, it was fine a few hours ago. The next problem I have is when I try to mount a burnt music cd it says :
mount: block device /dev/hdd is write-protected mounting as read-only (understandable)
mount: you must specify the filesystem type (I don't know what type)

Then I do it again and it says this:
Wrong fs type, bad option, bad superblock on dev/hdc
missing codepage or other error

Ok, I thought I remember that you can't mount audio cds. Did some googling and found out why. You can only mount file systems. A regular data cd has a file system. An audio cd doesn't.
fs type would be thinks like: vfat ntfs reiserfs ext3, Type man mount at the command line for more info.

Quote:

When I execute the following commands I get this error:
mount /dev/cdrom
cp -r /mnt/cdrom /home/user/foo
It says something about Input/Output error (sorry I would put the exact error message but i'll explain why in a minute)
When I try to do it again it says:
omitting '/mnt/cdrom'

Ok, to make this command work, I think it should be something more like this:

cp -r /mnt/cdrom/directory you want to copy /home/user/foo

I think the reason this one is going bad on you is that you didn't specify a source directory for cp -r. Mount the data cd, use ls to list the directories on it, and try the cp -r command again on one of them. Let me know if it works.
April 28th, 2006, 04:08 AM
aura2

I still get the same error message when I try to cp the specific directory.
cp: reading '/mnt/cdrom/this_dir/this_file': Input/output error

And as to the mounting of specific file systems. How do I know what file system it is? I had this problem trying to mount a blank CD as well. So finding out the file system would help me out. :) thanks guys
April 28th, 2006, 04:25 AM
preacherman481

Did some googling. May be a problem with the disk (the cd). Have you tried more than one? Also, a blank cd will not have any file system whatsoever. Experience and research will help you know what file system you are dealing with.
April 28th, 2006, 04:38 AM
aura2

Yeah I have tried multiple CD's and all say the same thing.

*And I did some googling as well and found out that Audio CD's don't have a valid file system so they aren't supposed to be mounted, thanks for you info on that :). Now I just have to get this Input/ouput problem fixed....
April 28th, 2006, 04:48 AM
preacherman481

Ok, on the computer you're trying to do this on, do you have another disk drive, like a DVD drive you can mount and try the command on?
April 28th, 2006, 05:08 AM
aura2

I have 2 DVD Writers on my computer. I tried with both and get the exact same error message.
April 28th, 2006, 06:12 AM
preacherman481

Can you use a graphical file manager like Nautilus or Konqueror and use drag and drop to try to copy things from your disk drives? Has that been working ok?

I don't know. I seem to be able to copy ok with that command on my system.
April 28th, 2006, 08:57 AM
SirDice

Looking at the device names I'm assuming you're using some linux distro..
Let's see if you can mount it by hand.. As root try:

Code:

mount -t iso9660 -r /dev/cdrom /mnt/cdrom

Does that work? Can you post the exact line in fstab?
April 28th, 2006, 03:51 PM
aura2

The line in fstab is
/dev/cdrom /mnt/cdrom auto noauto,owner 0 0
When I do
mount -t iso9660 -r /dev/cdrom /mnt/cdrom, It seems to mount just fine, but when I try to copy i still get the same errors

And no I haven't tried a Graphical interface, but I cant imagine that it would work any better, but I'll give it a shot
April 28th, 2006, 04:04 PM
preacherman481

Also, after you get a cd mounted try copy and pasting from the cd drive to the file browser and your desktop.

And also, do this:
mkdir test
cp -r test test2

Does that work?

Also, check to see if /dev/cdrom is owned by root or by your user account.
April 28th, 2006, 07:01 PM
aura2

I just realized that I can copy SOME of the files from the CDROM, but none of the ones that I really need.
So.

Quote:

Also, after you get a cd mounted try copy and pasting from the cd drive to the file browser and your desktop.

When I do this, I can see everything in the CDROM, I just can't copy about 6 of the files.

Quote:

And also, do this:
mkdir test
cp -r test test2

When I do this, it works just fine

The permissions on /mnt/cdrom are as follows
dr-xr-xr-x 1 root root 2048 2000-05-12 13:33 folder
April 28th, 2006, 09:00 PM
preacherman481

Quote:

When I do this, I can see everything in the CDROM, I just can't copy about 6 of the files.

Not sure what's going on, but what are the extensions for the files you're trying to copy?

And what happens when you try to copy them? Do you get an error message? What file manager are you using?
April 29th, 2006, 12:09 AM
aura2

This is the exact error
cp: reading '/mnt/cdrom/video_ts/vts_01_0.vob': Input/output error
cp: reading '/mnt/cdrom/video_ts/vts_01_1.vob': Input/output error
cp: reading '/mnt/cdrom/video_ts/vts_01_2.vob': Input/output error
cp: reading '/mnt/cdrom/video_ts/vts_01_3.vob': Input/output error
cp: reading '/mnt/cdrom/video_ts/vts_01_4.vob': Input/output error
cp: reading '/mnt/cdrom/video_ts/vts_02_1.vob': Input/output error

And I am just viewing them in Firefox browser
April 29th, 2006, 12:30 AM
preacherman481

Is this a copy protected DVD you're trying to copy?
April 29th, 2006, 01:02 AM
aura2

Nope
April 29th, 2006, 02:20 AM
preacherman481

Hi
The only way I've been able to duplicate the error you're getting is with a copy-protected DVD. Maybe you should look more closely on the DVD or on the jacket. Also, I think that some of them probably don't say they are copy protected. What's the name of the DVD you're trying to copy?

cp: reading `VTS_01_0.VOB': Input/output error
cp: reading `VTS_01_1.VOB': Input/output error
cp: reading `VTS_01_2.VOB': Input/output error
cp: reading `VTS_01_3.VOB': Input/output error
cp: reading `VTS_01_4.VOB': Input/output error
cp: reading `VTS_01_5.VOB': Input/output error
cp: reading `VTS_01_6.VOB': Input/output error
cp: reading `VTS_01_7.VOB': Input/output error
cp: reading `VTS_02_0.VOB': Input/output error
cp: reading `VTS_02_1.VOB': Input/output error
cp: reading `VTS_03_0.VOB': Input/output error
cp: reading `VTS_03_1.VOB': Input/output error
April 29th, 2006, 05:26 PM
aura2

Ah, I guess it is copyrighted. I didn't think that it did but sure enough it is.
Thanks preacher for all of your help, sorry it was something i should have picked up a long time ago :)