two sg are root, two aren't

[nordic bro]

I don't understand why this is happening (cdrom, sr_mod and sg are modules):

ls -la /dev/sg*

crw-rw---- 1 root root 21, 0 Apr 11 09 14:30 /dev/sg0
crw-rw---- 1 root root 21, 1 Apr 11 09 14:30 /dev/sg1
crw-rw---- 1 root cdrom 21, 2 Apr 11 09 14:30 /dev/sg2
crw-rw---- 1 root cdrom 21, 3 Apr 11 09 14:30 /dev/sg3

sg0 is my burner and when user tries "cdrdao write --device 8,0,0 ..." I see

[NeddySeagoon]

nordic bro,

Do you have a /etc/udev/rules.d/70-persistent-cd.rules file ?
If so move it out of the /etc/udev/rules.d/ directory and reboot.
That should cause the file to be rewritten.

If all is well, you can delete the old 70-persistent-cd.rules file.
Note, the file names in /etc/udev/rules.d/ serve only to order the way the files are used. Thats why you need to me the file elsewhere.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[nordic bro]

thanks for the tip. I moved 70*cd* to / but it wasn't re-created until I also moved 75-cd-aliases-generator.rules out of rules.d too. then I ended up with exactly the same thing I had when I started (and no change to /dev/sg{0,1})

besides becoming a udev writin fool, is there some tip you know of where maybe I can figure out why sg0,1 don't get cdrom group but sg2,3 do? (user belongs to "cdrom" group).

I have /dev/dvdr -> sr1 (ide dvd reader) and /dev/dvdrw -> sr0 (ide dvd burner). my mb is sata + jmicron (everything besides the sg device groups has worked fine for 18 months; ata/atapi/mfm is deselected and only use "serial ata" fwiw).

when I do "cdrecord scanbus" it says 8,0,0 is my burner. if user does 'cdrdao write --device /dev/dvdrw ..." it will work; "cdrdao write --device 8,0,0 ..." generates the privileges problem for sg0.

[NeddySeagoon]

nordic bro,

I get /dev/sg devices for my normal hard drives and my DVD.
The hard drive /dev/sg devices are root root and the DVDs are root cdrom
$ ls -l /dev/sg?
crw-rw---- 1 root disk 21, 0 Apr 14 19:23 /dev/sg0
crw-rw---- 1 root disk 21, 1 Apr 14 19:23 /dev/sg1
crw-rw---- 1 root disk 21, 2 Apr 14 19:23 /dev/sg2
crw-rw---- 1 root cdrom 21, 3 Apr 14 19:23 /dev/sg3
crw-rw---- 1 root cdrom 21, 4 Apr 14 19:23 /dev/sg4
These are the character controlling devices, which you should not need to care about.
Your DVD block devices will be /dev/sr0, /dev/sr1 and so on
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.