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(a)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(a)telus.net
"Those who hear not the music, think the dancers mad."
“Tolerance becomes a crime when applied to evil.” - Thomas Mann
"That state which separates it's warriors from it's scholars will have
it's thinking done by cowards and fighting done by fools" - Thucydides - The
Pelopenisia