Burning CD's as a user

JMJ_coder · 03-08-2008, 02:04 PM

Hello,

I am trying to figure out how to burn a CD as a regular user. I am a member of the cdrom group (I needed to put myself in that group to listen to audio CD's) - I can listen to audio CD's and mount data CD's.

When I go to burn and I search for the drive:

Code:

% cdrecord -scanbus

I get:

Code:

Cdrecord-ProDVD-Clone 2.01.01a23 (i686-pc-linux-gnu) Copyright (C) 1995-2006 Jörg Schilling
cdrecord: Warning: Running on Linux-2.6.21.5-smp
cdrecord: There are unsettled issues with Linux-2.5 and newer.
cdrecord: If you have unexpected problems, please try Linux-2.4 or Solaris.
Linux sg driver version: 3.5.27
cdrecord: Permission denied. Cannot open '/dev/sg0'. Cannot open SCSI driver.
cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you are root.
cdrecord: For possible transport specifiers try 'cdrecord dev=help'.

I need to su into root to be able to read the drive(s) and burn a CD.

Code:

# cdrecord -scanbus

Cdrecord-ProDVD-Clone 2.01.01a23 (i686-pc-linux-gnu) Copyright (C) 1995-2006 Jörg Schilling
cdrecord: Warning: Running on Linux-2.6.21.5-smp
cdrecord: There are unsettled issues with Linux-2.5 and newer.
cdrecord: If you have unexpected problems, please try Linux-2.4 or Solaris.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.9'.
scsibus2:
        2,0,0   200) 'ATA     ' 'WDC WD1600JS-60N' '10.0' Disk
        2,1,0   201) *
        2,2,0   202) *
        2,3,0   203) *
        2,4,0   204) *
        2,5,0   205) *
        2,6,0   206) *
        2,7,0   207) *
scsibus6:
        6,0,0   600) 'Generic ' 'USB SD Reader   ' '1.00' Removable Disk
        6,1,0   601) *
        6,2,0   602) *
        6,3,0   603) *
        6,4,0   604) *
        6,5,0   605) *
        6,6,0   606) *
        6,7,0   607) *
scsibus7:
        7,0,0   700) 'HP      ' 'Photosmart C6180' '1.00' Removable Disk
        7,1,0   701) *
        7,2,0   702) *
        7,3,0   703) *
        7,4,0   704) *
        7,5,0   705) *
        7,6,0   706) *
        7,7,0   707) *
scsibus1001:
        1001,0,0 100100) 'TSSTcorp' 'CD/DVDW TS-H652M' '0414' Removable CD-ROM
        1001,1,0 100101) *
        1001,2,0 100102) *
        1001,3,0 100103) *
        1001,4,0 100104) *
        1001,5,0 100105) *
        1001,6,0 100106) *
        1001,7,0 100107) *

Is there a way I can do this as user.

Oh, and here is my fstab entry for cdrom:

Code:

/dev/cdrom   /mnt/cdrom   auto   noauto,user,ro   0 0

bigrigdriver · 03-08-2008, 03:36 PM

Quote:

/dev/cdrom /mnt/cdrom auto noauto,user,ro 0 0

According to this, you can only read cds, not write them. Change ro to rw, then try again.
ro means read only.
rw means read/write.

Tinkster · 03-08-2008, 04:57 PM

That actually won't help him, he needs to modify the perms on
the SCSI raw-device. Best done from the udev-rules. (/etc/udev/rules.d)

Or maybe, with a little luck (I think he's lucky) he can just add
himself to the GROUP that owns the raw device, log out and back in
and live happily ever after.... :}

Cheers,
Tink

JMJ_coder · 03-08-2008, 06:15 PM

Hello,

Quote:

Originally Posted by Tinkster

That actually won't help him, he needs to modify the perms on
the SCSI raw-device. Best done from the udev-rules. (/etc/udev/rules.d)

Or maybe, with a little luck (I think he's lucky) he can just add
himself to the GROUP that owns the raw device, log out and back in
and live happily ever after.... :}

Cheers,
Tink

Which GROUP is that? I am a member of GROUP CDROM - I didn't know there was another GROUP for the device.

JMJ_coder · 03-08-2008, 06:20 PM

Hello,

Also, when thinking of solutions we need to keep this in mind - I only burn CD's/DVD's once in a while - when a new version of the OS comes out or like today when I needed to create an MP3 CD to hold an hour and forty minutes of music without using two discs.

Almost all the other time, I transfer data via other methods - primarily USB jumb drives and ftp.

So a solution for me may be different than a solution for someone who burns 10 CD's a day. If a solution for my rare usage is just do it as root, then so be it - but if there is another avenue, let's explore it.

JMJ_coder · 03-08-2008, 06:21 PM

Hello,

Quote:

Originally Posted by bigrigdriver

According to this, you can only read cds, not write them. Change ro to rw, then try again.
ro means read only.
rw means read/write.

If that were the cause, wouldn't it impede root from burning discs, too?

I did wonder about that, that is why I posted it, but thinking about it, it should impede root if that is the root cause (pun unintended).

Tinkster · 03-08-2008, 06:24 PM

Quote:

Which GROUP is that? I am a member of GROUP CDROM - I didn't know there was another GROUP for the device.

I don't know what group owns the sg* on your machine, my
friend. Try an ls -l /dev/sg*

Cheers,
Tink

JMJ_coder · 03-08-2008, 07:11 PM

Hello,

Quote:

Originally Posted by Tinkster

I don't know what group owns the sg* on your machine, my
friend. Try an ls -l /dev/sg*

Cheers,
Tink

It says that root is the owner and the group.