Install FC3 -> no /dev/cdrom set up

dubya · 11-13-2004, 10:53 AM

Hello all,
I hope everyone's upgrade of Fedora over the past week has gone smoothly. Mine has gone fairly well except for one major issue: I don't seem to have /dev/cdrom or /dev/cdrom1 setup like i used to in FC2 or FC1.

I noticed this first when trying to play an audio cd with xmms. There were no wma files in the /media/cdrom directory and when trying to play it with any other cd player app, there would be an error opening the drive.

cdrecord did see the drive and list it after cdrecord -scanbus. However, it will not record as expected.

Upon further inspection, i found that there is no symbolic link to cdrom or cdrecorder (my RW drive) in the /dev directory.

I get the feeling that I need these links to use these devices at all, but I do not know how to set one of these things up so any help would be appreciated.

BTW: Does anyone know why Fedora set up my mount points for these drives and my floppy drive in the /media directory and not the /mnt one? Is this just some new format?

Thanks.

perfect_circle · 11-13-2004, 11:25 AM

/dev/cdrom and /dev/cdrom1 are soft links to hdx where x may be a,b,c,d

if you have only one hard disk this is probably hda ( do fdisk -l to see what your hard disks are) and so
/dev/cdrom and /dev/cdrom1 probably should be /dev/hdb and /dev/hdc.

If you use ide to scsi emulator then the cdroms should be /dev/scd0 and /dev/scd1 (I think)

to create a soft link try:

ln -s < file name> <link name>

e.x

ln -s /dev/hdb /dev/cdrom

It would help if you send us your /etc/fstab entries

dubya · 11-15-2004, 11:35 AM

Thanks for your reply.

There is a /dev/hdc and /dev/hdd, however, their default permissions allow only the root to read it. I changed the permissions to let me read from it and I can, but when I log out or shut down and start back up, the permissions are changed back to their defaults. So, everytime I want to use the drive I have to reset the permissions, which is annoying, but surely there is a way to permanently change them.

Here is my fstab if you still wanted to see it:

Code:

# This file is edited by fstab-sync - see 'man fstab-sync' for details
LABEL=/                 /                       ext3    defaults        1 1
LABEL=/boot             /boot                   ext3    defaults        1 2
none                    /dev/pts                devpts  gid=5,mode=620  0 0
none                    /dev/shm                tmpfs   defaults        0 0
LABEL=/home             /home                   ext3    defaults        1 2
none                    /proc                   proc    defaults        0 0
none                    /sys                    sysfs   defaults        0 0
LABEL=SWAP-hda6         swap                    swap    defaults        0 0
/dev/hda2		/mnt/windows		ntfs	ro,uid=tom	0 0
/dev/hdd                /media/cdrecorder       auto    pamconsole,fscontext=system_u:object_r:removable_t,ro,exec,noauto,managed 0 0
/dev/hdc                /media/cdrom            auto    pamconsole,fscontext=system_u:object_r:removable_t,ro,exec,noauto,managed 0 0
/dev/fd0                /media/floppy           auto    pamconsole,fscontext=system_u:object_r:removable_t,exec,noauto,managed 0 0

Also, after changing permissions on the hdd to rw, I tried to burn a cd using cdrecord and it gave me every indication that it was indeed burning, except nothing was happening in the drive. The lights did not flash and it didn't make any noise like it usually would. cdrecord just kept going like it was until I stopped it. Any ideas of what would be wrong there?

Thanks again for your help.

perfect_circle · 11-15-2004, 01:38 PM

Put user, or users option in the cdroms options in fstab to let everyone mount or unmount the device.
this may fix your permition problem also.

As far as i know u sould use a scsi emulator to be able to burn CD's.
read something like that http://www.seismo.ethz.ch/linux/xcdroast.html or search in google

dubya · 11-17-2004, 09:15 PM

I did try to add the same thing the that the windows partition line has (uid=tom), but it reverts back upon restart which is really weird cause I've never had this happen before. It let me add the entire windows line to the file, why wouldn't it allow me to edit the other lines? Thanks for your help.

beatupbilly · 11-17-2004, 09:49 PM

you know I have been trying to figure out where my backup drives were listed for about three hours until this post. In the Media folder???? Argh. Progress means change and vice versa so I guess I have to be understanding.

richard_67 · 11-17-2004, 10:22 PM

Dubya,

I had the same problem. I have been following this thread to find how to fix it. I finally gave up trying to figure it out. then.....

This afternoon I ran up2date and found that there were several updates including a kernel update . (2.6.9-1668_FC3). After installing all updates things started working

I now have /dev/cdrom, /dev/dvd etc... Totem, xine all work perfect now. and K3B works as well.

Hope this works for you as well. (or anyone like me, who followed this thread to find an answer)

Richard

slyman · 11-17-2004, 11:39 PM

I may be wrong - new to Fedora (but not to Linux) and I'll check later on, but... IIRC, FC3 uses udev and hotplug so /dev entries are made on the fly depending on rules in /etc/hotplug.

What does this mean... well for starters any permission changes you make on /dev entries will change when you reboot or re-plug devices.

The rules can be set up to create a /dev/dvd or /dev/cdrom slinks as well creating the /dev entry.

This sounds annoying, but is actually quite good if you are patient and know what you are doing. You can write scripts so that when you plug in your usb camera/mp3 player etc it creates a directory somewhere and automatically mounts the player/camera to it (and do the reverse when you unplug it). You can set it up to automatically copy files if you want... all sorts. Great for non-techy users - if it is set up for them.

I'll have a look later (unless GF interrupts me)...

flysideways · 11-17-2004, 11:47 PM

Try this http://fedora.redhat.com/docs/udev/

Cheers.

dubya · 11-18-2004, 10:01 AM

Thanks a lot richard_67 and everyone else. My up2date agent was showing a blue check mark, so I didn't think it'd work when I looked for updates, but sure enough about 20 updates showed up. Totem still doesn't work for me; I get an error everytime I try to play a file. Do I need some sort of other support to get this working? Thanks again!

beatupbilly · 11-18-2004, 10:13 AM

remove it and reinstall it. i had to.

dubya · 11-18-2004, 10:29 AM

Still doesn't work, no idea why.

slyman · 11-18-2004, 04:52 PM

Dubya, did you read my and flysideway's posts?

Kroenecker · 11-18-2004, 04:55 PM

I struggled to get xmms to play a cd until I remembered that under preferences in the xmms menu, you can change parameters like whether or not you use alsa or oss, if your visualizations are selected, etc.

To fix your problem (FC3):

Go to preferences (under options). When the preference dialogue opens, you will be looking at a list of input plugins. Click cd audio player, which should be at the top of the menu. Click on configure. Then replace /mnt/cdrom with /media/cdrom and then click check drive.

This will work. Guaranteed. You don't have to change *anything* about soft links or permissions. (As long as the soft link from /dev/cdrom to your cd drive exists ie /dev/hdc

)

dubya · 11-18-2004, 05:39 PM

Yeah, I read your posts and my original problem is solved. My last post:

Quote:

Originally posted by dubya
Still doesn't work, no idea why.

was in reference to totem; I had uninstalled totem, then reinstalled and it doesn't work.

Are you still telling me to read your posts over again to fix totem? Did you read my post from before:

Quote:

Originally posted by dubya
Thanks a lot richard_67 and everyone else. My up2date agent was showing a blue check mark, so I didn't think it'd work when I looked for updates, but sure enough about 20 updates showed up. Totem still doesn't work for me; I get an error everytime I try to play a file. Do I need some sort of other support to get this working? Thanks again!