I just installed FC3 on a sony S260 laptop. The cdrom worked fine until I ran the update agent for all the latest updates (100+ updates). Now if I try and mount a cd via the desktop I get the following error :
Error- kio_devices_mounthelper
mount: block device /dev/hdc is write-protected, mounting read-only
mount: /dev/hdc already mounted or /media/cdrecorder busy
Please check that the disk is entered correctly.

# mount /dev/hdc /media/cdrecorder
mount: block device /dev/hdc is write-protected, mounting read-only

If I go to a root command prompt I can mount the cd however I still get a read-only warning (not that I expect to mount the cd in write-mode).


How can I make the desktop Icon work ?


Thanks in advance fr your help.

What does your /etc/fstab say with regard to your CD drive? Chances are some of your updates have changed /etc/fstab.

The line about the CD/DVD drive should read like this:
I'd also make sure that the permission of /dev/hdc is set to 666.

I need help editing my fstab in FC3, I don't know what this pamconsole thing is, but I edited it to look like the above post and "CD player" still won't let me change the device to /dev/hdc

here is my /etc/fstab

# This file is edited by fstab-sync - see 'man fstab-sync' for details
LABEL=/ / ext3 defaults 1 1
none /dev/pts devpts gid=5,mode=620 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
LABEL=SWAP-hda5 swap swap defaults 0 0
/dev/sda1 /media/usbdisk vfat pamconsole,noatime,sync,exec,noauto,managed 0 0
/dev/hdc /media/cdrecorder auto pamconsole,ro,owner,noauto 0 0

Hi there - don't edit your fstab.
Instead, choose a group to which make your user id belong (for example uucp) and then chgrp uucp /media/cdrecorder.
Let me know, it worked for me

*OK I forgot one more step: from fstab, remove the exec keyword from the row related to the cdrecorder and add (in the same place) the keyword ro. This latter keyword will prevent the system from producing the annoying message telling you that your cdrom is... ReadOnly.
bye

Replacing "exec" with "ro" worked great for me.

I have had enough. I can't get this mounting work with Fedore core 3
and KDE after few hours of messing around. I'm switching to something else.
If simple cd-rom mounting doesn't work then so be it. From now on I will use
Fedore core 3 cd's as frisbees. I wonder how far will the fly... I must try out soon.
I'll post the results here as soon as I'm finshed. I have been using Redhat/Fedora for
few years but enough is enough.

The problem is where to go next... My next distro must have KDE. Gnome plainly
sucks and anything Gnome based won't do. Any suggestions?

Did you try with the suggestions posted here?
it seems that in most cases the problem can be solved by just editing the /etc/fstab file, remove the exec keyword from the row related to the cdrecorder and add (in the same place) the keyword ro.
Did you try this?

Yesterday I tried all kinds of settings in fstab, no success. But today when I started
my machine mounting works, it's a ¤#"%"#% miracle!

This is what I have in my fstab:
/dev/hdd /media/cdrecorder auto user,exec,noauto 0 0

Maybe I'll give Fedora one more chance... But still it's not acceptable
that you have to fix these kind of basic things in the year 2005. Home
computers were invented 25 years ago and 25 years later I can't get
my CD-ROM working. At least I could read my floppy discs with C64.
Damn, now when I said that I feel like throwing some
Fedora CD's again. Oh well, I guess this is the advanced 21th century
technology.

Anyway, here's some other things you have to fix to get Fedora
Core 3 working:

No NFS, not needed:
chkconfig --level 35 rpcidmapd off
chkconfig --level 35 nfslock off

NVidia diplay driver:
cp -a /dev/nvidia /dev/nvidia0 /dev/nvidiactl /etc/udev/devices/
# alternative: echo /sbin/modprobe nvidia >> /etc/rc.local
/etc/sysconfig/desktop switched content DESKTOP="GNOME" --> DESKTOP="KDE"

After adding file /etc/yum.repos.d/dag.repo containing:
[dag] name=Dag RPM Repository for Fedora Core
baseurl=http://apt.sw.be/fedora/$releasever/en/$basearch/dag

yum install xmms-mp3
yum install xine

Fix 30 second lock ups:
echo alias net-pf-10 off >> /etc/modprobe.conf

I thought it was a miracle, I was wrong:

[erkki@potkukelkka ~]$ umount /media/cdrecorder/
umount: /media/cdrecorder: device is busy
umount: /media/cdrecorder: device is busy
[erkki@potkukelkka ~]$ fuser /media/cdrecorder/
/media/cdrecorder/: 5155
[erkki@potkukelkka ~]$ ps -A|grep 5155
5155 ? 00:00:00 gam_server
[erkki@potkukelkka ~]$

Yes - you're definitely right. The fix I suggested in fstab only helps you in solving the _mount_ problem.
The umount problem is still there and depends on some interaction between the kernel and gamin (gamserver).
It happens that the gamserver does not understand that there are no open files in the cd, so it denies you the permission to umount the device.
The only solution I have till now (but I'm not a guru, I'm just a user) is to digit:
killall gamserver before umounting. It works.
But it's annoying and illogic. Yes.
I can also tell you that something similar happened to me with an old version of mandrake linux, perhaps 9.x or even 10.0.
Mandrake did not use gamin, but something different (supermount), yet it suffered from the same problem.
As a further idea I suggest that the problem might be connected to the fact that when I browse the content of the CD with Konqueror and then close the window, it seems that the process related to that window does not disappear (ps -aux). As long as I don't KILL all the processes related to konqueror, it seems that Konqueror somewhat keeps some pointer to the cd, thus misleading gamserver.
Anyone has some information/hints on this hypothesis?

The latest updates now have fixed the problem. These were among updates
so something must have been changed:

kernel-2.6.10-1.770_FC3
gamin-0.0.25-1.FC3
udev-039-10.FC3.

[erkki@potkukelkka ~]$ mount /media/cdrecorder/
mount: block device /dev/hdd is write-protected, mounting read-only
[erkki@potkukelkka ~]$ umount /media/cdrecorder/
[erkki@potkukelkka ~]$

I'm really sorry that I still have not thrown my cd's so I don't know how far will they fly :-)