Arch Linux

dcfighter

Member

Registered: 2008-08-11

Posts: 23

Unable to mount optical.

The whole situation looks like that:
- I have two Arch installations, one of them with kdemod 3 and one with KDE4
- On the one with kdemod everything works fine. rc.conf and fstab are the same as in the system with KDE4 .
Problem description:
- Apps like Amarok and K3B work fine, I can listen to audio cds and burn cd/dvd
- When I try to acces the CD/DVD from a shrotcut an error pops up:

Could not mount device.
The reported error was:
mount: only root can do that

-  When I login on root account it still doesn't work.
- There are no files in directory described as mount point (/media/cdrom0).
-  Mounting in console gives me error:

bash-3.2# mount -t iso9660 /dev/scd0 /media/cdrom0
mount: block device /dev/sr0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
       missing codepage or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

(I've already tried other filesystems, commands etc.)
My fstab entry for the drive looks like this:

/dev/scd0       /media/cdrom0   udf,iso9660 users,noauto,exec,utf8 0       0

PS.
I have the same kernel on kde4 and kdemod installation

burnside

Member

From: Asheville, NC

Registered: 2008-09-27

Posts: 45

Re: Unable to mount optical.

It's been a while since I used KDE but if I remember correctly apps like K3B actually use pmount instead of mount.

As for fstab, correct me if I'm wrong, but shouldn't that be 'user' instead of 'users'?

dcfighter

Member

Registered: 2008-08-11

Posts: 23

Re: Unable to mount optical.

Ok, I'll read the man pages for pmount, I hope it will work.

As for fstab, correct me if I'm wrong, but shouldn't that be 'user' instead of 'users'?

Either way is bad and I've seen both wordings in various topics.

dcfighter

Member

Registered: 2008-08-11

Posts: 23

Re: Unable to mount optical.

In the end pmount gave the exact same error.
EDIT:
I typed dmesg | grep sr and got that:

 sda:<4>Driver 'sr' needs updating - please use bus_type methods
sr0: scsi3-mmc drive: 40x/40x writer cd/rw xa/form2 cdda tray   
sr 1:0:0:0: Attached scsi CD-ROM sr0                            
sr 1:0:0:0: Attached scsi generic sg1 type 5                    
end_request: I/O error, dev sr0, sector 64                      
end_request: I/O error, dev sr0, sector 1383964                 
end_request: I/O error, dev sr0, sector 1382940                 
end_request: I/O error, dev sr0, sector 1383960                 
end_request: I/O error, dev sr0, sector 1382936                 
end_request: I/O error, dev sr0, sector 1383956                 
end_request: I/O error, dev sr0, sector 1382932                 
end_request: I/O error, dev sr0, sector 1383364                 
end_request: I/O error, dev sr0, sector 1382340                 
end_request: I/O error, dev sr0, sector 1383356                 
end_request: I/O error, dev sr0, sector 1382332                 
end_request: I/O error, dev sr0, sector 1024                    
end_request: I/O error, dev sr0, sector 2048                    
end_request: I/O error, dev sr0, sector 1383964                 
end_request: I/O error, dev sr0, sector 1382716                 
end_request: I/O error, dev sr0, sector 1383960                 
end_request: I/O error, dev sr0, sector 1382712                 
end_request: I/O error, dev sr0, sector 1382720                 
end_request: I/O error, dev sr0, sector 1383956                 
end_request: I/O error, dev sr0, sector 1382708                 
end_request: I/O error, dev sr0, sector 1383252                 
end_request: I/O error, dev sr0, sector 1382004                 
end_request: I/O error, dev sr0, sector 1383216                 
end_request: I/O error, dev sr0, sector 1381968                 
end_request: I/O error, dev sr0, sector 1248                    
end_request: I/O error, dev sr0, sector 2496                    
end_request: I/O error, dev sr0, sector 1248
end_request: I/O error, dev sr0, sector 2496
end_request: I/O error, dev sr0, sector 64
isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16
NAT: packet src 69.65.40.153 -> dst 97.109.101.46
end_request: I/O error, dev sr0, sector 64
end_request: I/O error, dev sr0, sector 1383964
end_request: I/O error, dev sr0, sector 1382940
end_request: I/O error, dev sr0, sector 1383960
end_request: I/O error, dev sr0, sector 1382936
end_request: I/O error, dev sr0, sector 1383956
end_request: I/O error, dev sr0, sector 1382932
end_request: I/O error, dev sr0, sector 1383364
end_request: I/O error, dev sr0, sector 1382340
end_request: I/O error, dev sr0, sector 1383356
end_request: I/O error, dev sr0, sector 1382332
end_request: I/O error, dev sr0, sector 1024
end_request: I/O error, dev sr0, sector 2048
end_request: I/O error, dev sr0, sector 1383964
end_request: I/O error, dev sr0, sector 1382716
end_request: I/O error, dev sr0, sector 1383960
end_request: I/O error, dev sr0, sector 1382712
end_request: I/O error, dev sr0, sector 1382720
end_request: I/O error, dev sr0, sector 1383956
end_request: I/O error, dev sr0, sector 1382708
end_request: I/O error, dev sr0, sector 1383252
end_request: I/O error, dev sr0, sector 1382004
end_request: I/O error, dev sr0, sector 1383216
end_request: I/O error, dev sr0, sector 1381968
end_request: I/O error, dev sr0, sector 1248
end_request: I/O error, dev sr0, sector 2496
end_request: I/O error, dev sr0, sector 1248
end_request: I/O error, dev sr0, sector 2496
end_request: I/O error, dev sr0, sector 64
isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16

Last edited by dcfighter (2008-09-27 23:09:07)