Failures with cdrecord

[Paul Erickson]

Rick Stevens wrote:
> On Fri, 2006-07-14 at 17:27 -0700, Paul Erickson wrote:
>   
>> Janina Sajka wrote:
>>     
>>> This is old news now, sorry. I've been away running an exhibit booth for
>>> a few weeks at a convention.
>>>
>>> I did want to tell you that I got this problem resolved. It turned out
>>> to be the media, after all. So, I guess not all media on the store shelf
>>> is acceptable.
>>>
>>> Janina
>>>   
>>>       
>> Glad you got your problem sorted out, unfortunately that does not 
>> address the problem where
>> cd's can be written as root, but not as user. I can put a disc in the 
>> burner and have it fail to
>> write when I am logged in as a user, and then logout and back in as 
>> root, and write the files
>> to the disc using Nautilus cd writing utility, without any difficulty...
>>     
>
> Permissions, my friend, permissions.  I'm willing to bet that the device
> node in /dev (e.g. /dev/hdc) doesn't permit just anyone access to the
> device.
>
> You could edit /etc/udev/rules.d/50-udev.rules and modify a couple of
> lines to change the permissions.  Assuming it's an IDE drive, you can
> change the lines:
>
> KERNEL=="hd[a-z]", BUS=="ide", SYSFS{removable}=="1",
> PROGRAM=="check-cdrom.sh %k CD-R", SYMLINK+="cdwriter cdwriter-%k cdrw
> cdrw-%k"
>
> KERNEL=="sr[0-9]*", BUS=="scsi", PROGRAM=="check-cdrom.sh %k CD-R",
> SYMLINK+="cdwriter cdwriter-%k cdrw cdrw-%k"
>
> KERNEL=="hd[a-z]", BUS=="ide", SYSFS{removable}=="1",
> PROGRAM="check-cdrom.sh %k DVD-R", SYMLINK+="dvdwriter dvdwriter-%k
> dvdrw dvdrw-%k"
>
> KERNEL=="sr[0-9]*", BUS=="scsi", PROGRAM=="check-cdrom.sh %k DVD-R",
> SYMLINK+="dvdwriter dvdwriter-%k dvdrw dvdrw-%k"
>
> to read
>
> KERNEL=="hd[a-z]", BUS=="ide", SYSFS{removable}=="1",
> PROGRAM=="check-cdrom.sh %k CD-R", SYMLINK+="cdwriter cdwriter-%k cdrw
> cdrw-%k", MODE="0666"
>
> KERNEL=="sr[0-9]*", BUS=="scsi", PROGRAM=="check-cdrom.sh %k CD-R",
> SYMLINK+="cdwriter cdwriter-%k cdrw cdrw-%k", MODE="0666"
>
> KERNEL=="hd[a-z]", BUS=="ide", SYSFS{removable}=="1",
> PROGRAM="check-cdrom.sh %k DVD-R", SYMLINK+="dvdwriter dvdwriter-%k
> dvdrw dvdrw-%k", MODE="0666"
>
> KERNEL=="sr[0-9]*", BUS=="scsi", PROGRAM=="check-cdrom.sh %k DVD-R",
> SYMLINK+="dvdwriter dvdwriter-%k dvdrw dvdrw-%k", MODE="0666"
>
> In other words, append
>
> 	, MODE="0666"
>
> to the end of each of those lines.  When the devices are created, this
> SHOULD set up the permissions to be 0666 (rw-rw-rw-) and therefore
> writable by anyone.  Whether this is a wise thing to do, I leave to your
> discretion.
>
> ----------------------------------------------------------------------
> - Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
> - VitalStream, Inc.                       http://www.vitalstream.com -
> -                                                                    -
> -              "Swap memory error: You lose your mind"               -
> ----------------------------------------------------------------------
>   
Hi Rick,

Thanks for the reply. I made the modifications you indicated, but still 
no joy. Can write CD's fine as root,
but not as a user. Any other thoughts would be appreciated.

-- 
----------------------------------------------------------------
cheers, Paul - VA7NT - email: va7nt at telus.net

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