opening cd-rom

linmix · 02-06-2005, 05:09 AM

I'm not sure whether this isn't a hardware question, but there must be a software sollution, so here goes:

I'm having problems with my cd-rom drive. I tried to use cdrdao to copy a cd, but due to copy protection, the drive went haywire. I opened it without unmounting and subsequently inserted a new cd. The new cd doesn't appear on my desktop, but I've been able to use cdrdao to extract the data to a file. Now, the drive will not open if I push the eject button and I get the following message when I try to mount / unmount

$ umount /media/cdrecorder/
umount: /media/cdrecorder is not mounted (according to mtab)
$ mount /media/cdrecorder
/dev/hdc: Input/output error
mount: /dev/hdc: can't read superblock

the errors are the same if I do it a s root.
How do I get the drive to respond without rebooting?

musicman_ace · 02-06-2005, 05:12 AM

try umount /dev/hdc
You could try a -n or a -f after the umount and before the /dev/hdc

linmix · 02-06-2005, 05:38 AM

$ umount /dev/hdc
umount: /dev/hdc: not mounted

# umount -n /dev//hdc
umount: /dev/hdc: not mounted
umount: /dev/hdc: not mounted

# umount -f /dev//hdc
umount2: Invalid argument
umount: /dev/hdc: not mounted
umount2: Invalid argument
umount: /dev/hdc: not mounted

linmix · 02-10-2005, 09:18 AM

I managed to open it using k3b(!!). Somehow, even though mount couldn't access the disk, I only needed to right click it and select eject in k3b to open the drive. What can k3b do that mount can't?

Oliv' · 02-10-2005, 01:41 PM

Quote:

even though mount couldn't access the disk

if the CD has no data on it, I think it is impossible to mount it

linmix · 02-11-2005, 04:55 PM

The thing is, mounted or unmounted, I wasn't able to open the drive, and k3b did it. I'd like to know how. It's a bit stupid having to open k3b to simply open a drive. Anyway, I have a perfectly good cd in my drive now, which I can mount and unmount, but I can't eject it in any way... stuck again!

Oliv' · 02-12-2005, 07:27 AM

First: Happy Birthday

yes it's a very annoying problem... have you try with the "eject" command (If it is installed on your system)
else check the following values:

Code:

[14:11][olivier@gentoo ~]$cd /proc/sys/dev/cdrom/
[14:27][olivier@gentoo /proc/sys/dev/cdrom]$cat autoclose
1
[14:27][olivier@gentoo /proc/sys/dev/cdrom]$cat autoeject
0
[14:27][olivier@gentoo /proc/sys/dev/cdrom]$cat check_media
0
[14:27][olivier@gentoo /proc/sys/dev/cdrom]$cat lock
1

'cause I know that one time I've modified autoeject value and then each time I tried to acces my CD drive, it opened

linmix · 02-12-2005, 12:12 PM

Thanks. Isn't age supposed to bring wisdom? Well I don't feel any wiser...

I tried

Code:

[linmix@localhost cdrom]$ eject cdrecorder
eject: unable to eject, last error: Invalid argument
[linmix@localhost cdrom]$ mount /media/cdrecorder/
[linmix@localhost cdrom]$ eject /media/cdrecorder/
eject: unable to eject, last error: Invalid argument

As you can see to no avail. Then I tried:

Code:

[linmix@localhost ~]$ cd /proc/sys/dev/cdrom/
[linmix@localhost cdrom]$ cat autoclose
1
[linmix@localhost cdrom]$ cat autoeject
0
[linmix@localhost cdrom]$ cat check_media
0
[linmix@localhost cdrom]$ cat lock
1

Is this OK?
Any other suggestions?

AVD_ZM · 02-12-2005, 12:21 PM

as su
try kdeeject /media/cdrecoder

oh n happy b-day!!

Oliv' · 02-12-2005, 12:41 PM

or try: eject /dev/hdc

linmix · 02-12-2005, 01:42 PM

kdeeject /media/cdrecorder worked!
But, I got the following error message on the console:

Code:

[root@localhost cdrom]# kdeeject /media/cdrecorder/
Session management error: Authentication Rejected, 
reason : None of the authentication protocols specified are 
supported and host-based authentication failed

plus a pop-up saying:
KDE Eject - KDialog
Eject /media/cdrecorder failed!

Strange!
Still, saved me rebooting!
-------------------------------------------------------------------
[root@localhost cdrom]# uptime
20:45:17 up 8 days, 2:14, 2 users, load average: 0.28, 0.17, 0.08