/dev/dvd is /dev/cdrom?
 

mount /dev/cdrom /mnt/cdrom

That's just great.

But mounting /dev/dvd to a mount point mounts the cdrom device, not the dvd device.. what gives? How do you mount a DVD?

/dev/dvd is just a link to a true hardware device. Do:

$ ls -l /dev/dvd

to see what it links to. The reason for the link is that many programs that play dvds look for a /dev/dvd by convention. /dev/dvd should link to the /dev/hdx that is your dvd drive.

Re: /dev/dvd is /dev/cdrom?
 

or d'ya mount somethin' like
as root :
#ln -s /dev/cdrom /dev/dvd

???

and

Both do the same thing.

And that's why. Does anyone have any idea what the device actually is?

hte link target says it. It's /dev/sr0 on your machine. It's one and the same drive, right? So it's no puzzle.

/dev/sr0 is usually another link to /dev/scd0 so you have a double link going which is not all that unusual with cdrom devices:

/dev/dvd --> /dev/sr0 --> /dev/scd0

Check it with:

$ ls -l /dev/sr0

Ultimately you'll get back to a hardware device you recognize, here, /dev/scd0 a scsi emulated cd drive.

But only hdc is scsi emulated. hdd is my DVD drive. They should be seperate devices. Both cdrom and dvd point to sr0.

bash-2.05b$ ls -l /dev/sr0
brw-r----- 1 root disk 11, 0 Apr 12 1999 /dev/sr0

sr0 doesn't point to anything else.

bash-2.05b# mount -t auto /dev/scd0 /mnt/cdrom
mount: block device /dev/scd0 is write-protected, mounting read-only

This mounts my cdrom. scd1 doesn't exist because I don't have the DVD drive scsi emulated.

The DVD drive device has to exist somewhere. I don't see why both dvd and cdrom are symlinked to the same device when they're two seperate devices.

do you have two physical drives or is it a combo drive?

If you have separate drives, you can link /dev/dvd to /dev/hdd. Actually, you can even do it if it is a combo drive - I do it. First remove /dev/dvd and then:
ln -s /dev/hdd /dev/dvd

This will link /dev/dvd to /dev/hdd and you can enable dma for your dvd drive by enabling it for /dev/hdd (is this what you want to do?).

You guys are fast to reply... anyway, I figured it out in a roundabout way. I ran k3b as root and looked at what devices it probed for writer and reader devices (they're completely seperate physical drives, yes) and it found my CDRW, which was /dev/scd0, like I thought, and the DVD was /dev/hdd. Only thing now is how to give k3b full access to the devices so I can run it as a user... I bet that's a good search topic.

I was going to try just mounting /dev/hdd the first time, but that would have been too obvious so I never tried it...

That's almost as bad as when someone asked me how to check mail in local mailboxes:

"mail, duh"

Don't I feel retarded.

Thanks guys. Just goes to show that even if you can't help someone, you make them frustrated enough to look harder and find what they're looking for.

peace

I am running Ubuntu 8.04.1 on acer aspire one and am having the same problems. Couldn't get acidrip or mplayer to run DVD. /dev/dvd didn't exist. I looked at properties of the DVD that popped up on desktop when I plugged in usb. Found it at /media/cdrom0 plugged that into acidrip and everything worked peachy!