Mounting CDROM

browser · 06-17-2005, 11:02 PM

G,Day, Can someone tell me what the console command is to open & mount CDROM using root priviladges as I find the only way I can manually open CDROM is by logging in as administrator instead of just "user" ,Thanks Anyone. I have tried a few different commands I thought might work but no Success.

jong357 · 06-18-2005, 12:13 AM

to open (incase your button is broke):

Code:

eject /dev/hdc

or whatever device designation your drive is... hd?

To mount:

Code:

mount /dev/hdc /mnt/cdrom

or whatever device designation your drive is... hd?

If you can only mount as root and not a user then you have some perm problems.. I've seen LOTS of similar posts within the last couple weeks on this. I always run as root so I never have any problems with permissions...

Nitrox · 06-18-2005, 02:13 AM

Always run as root??
Like to live on the edge eh??

To find out what hd* you have, try this..

dmesg | grep cd

That pretty much says scan the text you saw when you booted up for anything that
resembles cd.

It will spit out a few lines, what cd / dvd you have, etc.
It should say something like hdc: , or possibly hdd, or ser0, something like that ...
As in mount /dev/ser0 /mnt/cdrom. The /mnt/cdrom is where you can find your data
after its mounted properly.

Then follow jong"The Root Wildman"357's commands (j/k btw)

Jimbo1265 · 06-18-2005, 07:35 AM

You have a permission problem. You need to add your user account to the cdrom group.

Code:

#usermod -G cdrom username

Code:

$man usermod

for further info.
Once you've done that, edit /etc/fstab. You should see a line similar to

Code:

/dev/hdc  /mnt/cdrom  iso9660  noauto,owner,ro  0  0

Change it to

Code:

/dev/hdc  /mnt/cdrom  iso9660  noauto,users,ro  0  0

Once that's done, you'll be able to mount the drive.

browser · 06-18-2005, 09:15 PM

Thanks 4 that priceless information, I changed my fstab from "owner" to "users" & worked great , I just wasnt sure why you have "/dev/hdc" instead of "/dev/cdrom" like I have , " /dev/cdrom /mnt/cdrom iso9660 noauto,users,ro 0 0 " , all the same though ' it worked Thanks Again;

Basel · 06-19-2005, 05:03 AM

Could you please tell me the reason to add the users group and not the cdrom group to /etc/fstab?

Code:

/dev/hdc  /mnt/cdrom  iso9660  noauto,users,ro  0  0

why not?

Code:

/dev/hdc  /mnt/cdrom  iso9660  noauto,cdrom,ro  0  0

Also, why do /dev/cdrom and /dev/sr0 have different permissions?

Code:

bash-3.00$ ls -l /dev/cdrom
lrwxrwxrwx  1 root root 3 2005-06-19 12:48 /dev/cdrom -> sr0
bash-3.00$ ls -l /dev/sr0
brw-rw----  1 root cdrom 11, 0 2005-06-19 12:48 /dev/sr0

browser · 06-19-2005, 09:47 AM

I tried the same as you put down & I got some error ,Im not sure what it was now ,but I might get around to changing it back again to see what it was, this way also seems to allow users to to mount cdrom. Thanks, /dev/hdc is also my windows partition

Jimbo1265 · 06-19-2005, 11:38 PM

The /dev/hdc thing was an error. /dev/cdrom is a symlink to the actual block device. In my case, /dev/hdc.
You apparently have at least 3 hard drives. Thus one of those is /dev/hdc. That would put your cdrom further down in the chain.
The correct way is to use the name of the symlink in fstab. That way the system knows it's a cdrom and not an actual hard drive.

browser · 06-20-2005, 08:04 AM

Good Guess, I have 3 HD, I am still not familliar with a lot of linux terms , Would you be kind enough to give me a example maybe of how The correct way is to use the name of the symlink in fstab. That way the system knows it's a cdrom and not an actual hard drive. Thanks again, Appreciate your advice.