Question

mount: block device /dev/scd0 is write-protected, mounting read only

Asked by: bbarac

I am trying to mount a cdrom in linux RHE3 that's running on ESX 3.0.1 server, I am able to mount the cdrom by using the command mount /dev/scd0 /mnt/.....  and the cd mounts and I can see the file but after mounting I get the message "mount: block device /dev/scd0 is write-protected, mounting read only"  How do I fix this????? I can't seem to be able to copy any files from the cd due to this message.

Thanks.

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Asked On
2007-09-26 at 09:37:34ID22854274
Tags

device

,

block

,

mounting

Topics

Linux Setup

,

Linux Administration

,

Red Hat Linux

Participating Experts
1
Points
500
Comments
11

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Answers

 

by: ravenplPosted on 2007-09-26 at 10:07:56ID: 19964741

This is normal, as default is to mount read-write.
You want it RO
mount -o ro /dev/scd0 /mnt/...

But even though You should be able to copy files from mounted filesystem. What is exact error message?
What shows
ls -l /mnt/some/file/from/cd

 

by: bbaracPosted on 2007-09-26 at 11:05:35ID: 19965149

I ran the mount -o ro /dev/scd0 /mnt/. command and this time no error but still read only file, it list's the file as read only, I have tried copying from a CD and from an ISO file but no difference

s -l /mnt/some/file/from/cd The file is still listed a -r--r--r--

trying to do a chmod or copy it will say that the file is "Read-only file system"  

 

by: ravenplPosted on 2007-09-26 at 11:21:56ID: 19965324

Wait, what Are You trying to do?
You can;t copy file to CD/DVD. CD/DVD is read-only by it's design!
You should be able to copy file from CD/DVD.

 

by: bbaracPosted on 2007-09-26 at 11:24:08ID: 19965367

yes i'm copying from the cd to the linux dir, not onto the cd.  

 

by: bbaracPosted on 2007-09-26 at 11:26:15ID: 19965399

basically I need to manually install one of the RPM packages that's on the CD, why I try the rpm -Uhv command on the rpm package I get "VMnix is needed by VMWare-esx-tools-3.0.1-32039" so I thought ok maybe I better copy this file on the local drive and this is where i get the read only problem.

 

by: ravenplPosted on 2007-09-26 at 12:03:34ID: 19965777

> VMnix is needed by VMWare-esx-tools-3.0.1-32039
confirms that the file is readable,

Are You trying
cp VMWare-esx-tools-3.0.1-32039.i36.rpm /tmp
and getting "read-only filesystem" ?
Maybe the destination folder is read only or You have no permissions?

 

by: bbaracPosted on 2007-09-26 at 12:06:28ID: 19965801

ya im just trying to do a simple file copy from the cd into the /tmp dir, the directory that I am trying to copy to has full access, I have done a chmod 777 on it. so that should not be causing the problem.

 

by: bbaracPosted on 2007-09-26 at 12:09:51ID: 19965826

OMG never mind, I just checked the permissions on the directory that i was trying to copy into and I did not have full right, I can swear that I ran the chmod command on that folder.......  The copy worked ok now..

Thanks,

I still get the VMnix is needed trying to run the install the rpm package but that's another topic I guess.

 

by: ravenplPosted on 2007-09-26 at 12:14:05ID: 19965864

It should be shipped along with vmware. Where from have You got the vmware?

 

by: bbaracPosted on 2007-09-26 at 12:22:09ID: 19965936

no such package on the cd.  ESX you can get straight of the VMWare's site.

 

by: ravenplPosted on 2007-09-26 at 12:30:31ID: 19966007

Have You installed the esx server already? It should be included in the package. VMWare-esx-tools requires server...
rpm -qa | grep -i vmware # will verify vmware packages
If it's installed and still error, You can try forcing the installation
rpm -Uv --nodeps VMWare-esx-tools...

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