SATA DVD wont mount

unobtanium · 11-17-2007, 11:15 AM

I have just installed a SATA DVD drive (firmware updated to latest).
My problem is that if I insert a blank DVD or CDROM it is mounted and I have full permissions on it - no problem. But, when I insert a CDROM that has been written to I get the following warning

Quote:

mount: mount point /media/DVD-W does not exist

My fstab is as follows

Code:

/dev/sda1		/boot		ext2		defaults,noatime	1 2
/dev/sda3		/		reiserfs	notail,noatime		0 1
/dev/sda2		none		swap		sw		0 0
/dev/sda4		/home		reiserfs	defaults,noatime	0 0
/dev/sr0		/media/DVD-W	auto		defaults,user	0 0
#/dev/fd0		/mnt/floppy	auto		noauto		0 0

shm			/dev/shm	tmpfs		nodev,nosuid,noexec	0 0

and my mtab reads

Code:

/dev/sda3 / reiserfs rw,noatime,notail 0 0
proc /proc proc rw,nosuid,nodev,noexec 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec 0 0
udev /dev tmpfs rw,nosuid 0 0
devpts /dev/pts devpts rw,nosuid,noexec 0 0
/dev/sda1 /boot ext2 rw,noatime 0 0
/dev/sda4 /home reiserfs rw,noatime 0 0
shm /dev/shm tmpfs rw,noexec,nosuid,nodev 0 0
usbfs /proc/bus/usb usbfs rw,noexec,nosuid,devmode=0664,devgid=85 0 0

I don't understand what is wrong.
Any help/ pointers would be greatly appreciated.

Nylex · 11-17-2007, 11:20 AM

The message you're getting from mount is really quite self-explanatory. What don't you understand about it?

unobtanium · 11-17-2007, 11:31 AM

Maybe I should re-phrase the question;
Why cant I mount a CDROM that has data on it?

I can mount both blank Cds and DVDs so why not one that has been written to.

Maybe I am just being dense here but I didn't have this problem with my IDE DVD writer.

Nylex · 11-17-2007, 11:34 AM

You don't mount CDs that haven't been written to. You can't mount CDs because the mount point doesn't exist.

unobtanium · 11-17-2007, 11:42 AM

Thanks Nylex but the question still remains - why can't I access any data that has been written to a CD?
Maybe my terminology is wrong?

Nylex · 11-17-2007, 11:47 AM

*Bangs head on table*. Because you haven't mounted the CD. You can't mount something to somewhere that doesn't exist!

unobtanium · 11-17-2007, 12:07 PM

Nylex sorry about you head - I think its going to get sore.

1/ I insert a CD with data on it into the writer.
2/ The desktop icon tells me 'unmounted cd writer'
3/ So I left click on the icon and click 'mount'
4/ Then this warning appears 'mount: mount point /media/DVD-W does not exist'
5/ If I select the 'Open in New Window' option I still get 'mount: mount point /media/DVD-W does not exist'

Thanks for your patience

Nylex · 11-17-2007, 12:12 PM

Read the error message! The mount point doesn't exist!! Either change your fstab entry or create it!

unobtanium · 11-17-2007, 12:23 PM

I had already tried changing fstab to read

Code:

/dev/sda1		/boot		ext2		defaults,noatime	1 2
/dev/sda3		/		reiserfs	notail,noatime		0 1
/dev/sda2		none		swap		sw		0 0
/dev/sda4		/home		reiserfs	defaults,noatime	0 0
/dev/sr0		/media/cdrom	auto		defaults,user	0 0
#/dev/fd0		/mnt/floppy	auto		noauto		0 0


shm			/dev/shm	tmpfs		nodev,nosuid,noexec	0 0

Didn't make any difference, this is how it was prior to installing this drive, it all worked fine for the IDE cd/dvd writer but not for this one.

unobtanium · 11-17-2007, 07:10 PM

Just curious, am I missing a major point here (if so please don't try to be subtle) as I just don't know what to do.
If I need to change the fstab entry - what should I change it to?
Any direction would be appreciated.

nLEyETn · 11-17-2007, 07:47 PM

If the mount point doesn't exist, then you just have to create it. The mount point is just a directory. So all you have to do is

Code:

$ mkdir /media/DVD-W

Electro · 11-17-2007, 11:16 PM

Normally /dev/sr is used on the side for writing to an CD or DVD disc. I think for SCSI CD/DVD drives the device node is /dev/scdX. The X designates the device number. I think it ranges from 0 (first drive) to 255 (256th drive). I recommend check your logs to make the CD/DVD drive is /dev/scd0 (just assuming). The log file is /var/log/messages. You can use dmesg to get a quick look, but it might be out of the buffer depending on the capacity that you gave it during configuring the kernel before compiling.

For any drive that you want to mount. You have to know if the directory exist before mounting the drive at that desire directory. If you try to mount a drive to a directory that does not exist, it will never mount and it will print an error. Linux is a directory and file structure, so you have to mount a drive at a directory in order to use it.

unobtanium · 11-18-2007, 07:23 AM

Thank you very much for the answer and explanation - very simple in the end.
But I wouldn't have got there without help (well not this year anyway!)
By the way - it works just fine
Thanks again to all.