home *** CD-ROM | disk | FTP | other *** search
- Howto setup an ATAPI CD-RW/DVD+-RW recorder on Debian/Ubuntu
- ============================================================
-
- This guide should be applicable to most kernel 2.6 using distributions of
- GNU/Linux. For installations with kernel 2.4, continue reading below.
-
- Kernel 2.6.*
- ============
-
- If you have just one CD writer in your computer, CD-writing should work out of
- the box. There should be a symbolic link /dev/cdrw which points to your actual
- CD-Writer's device (e. g. /dev/hdb). If the link is not present (eg. the
- system is not using udev/devfs) or if you want to use a different device as
- default, you can configure the device in /etc/wodim.conf:
-
- CDR_DEVICE=/dev/hdd
-
- would configure the default device to be /dev/hdd, i. e. the slave
- device on the secondary IDE bus.
-
- You can always override this default setting with wodim's "dev"
- option:
-
- wodim dev=/dev/hdc ...
-
- Only users part of the system group "cdrom" are able to write CDs.
- If you wish to allow non-root users to write CDs then add your users to the
- cdrom group ("adduser user cdrom") and let the user completely logout and
- re-login.
- Note: with certain kernel versions wodim can fail with this message:
- "wodim: Operation not permitted. Cannot send SCSI cmd via ioctl"
- In this case it still does need the suid bit - please send patches if you have
- identified the reason of that problem.
-
- Kernel 2.4.* (for 2.5/2.6, see above)
- =====================================
-
- Where we start:
- Linux: Kernel 2.4.20-bf2.4 (Debian package kernel-image-2.4.20-bf2.4)
- Distribution: Debian Woody 3.0r2, i386
- Devices: one CDRW-Writer, one CDROM-drive, both ATAPI
-
- 1. Become root, try "grep hd.: /var/log/kern.log" to find out where your
- ATAPI-devices are connected to (hd?-names).
- 2. Edit your boot configuration file, eg. /etc/lilo.conf if you use
- lilo or the batch-file if you boot via loadlin.
- 3. Find a line where you can append additional kernel parameters, eg.
- "append=" in lilo.conf or the loadlin-line in the batch file.
- 4. Append sth. like this: "hdb=ide-scsi hdc=ide-scsi max_scsi_luns=1"
- The hdX-parameters defines devices that should be mapped to SCSI
- latter. You may do it with non-writers too, since the emulation layer
- is almost complete. Or omit some so the devices will use their
- native drivers (eg. ide-cd).
- 5. Save the file, reinstall the bootloader (ie. running "/sbin/lilo")
- 6. Call "modconf" in a console or xterm, enter the section
- "kernel/drivers/scsi", load "sg" and "ide-scsi"
- 7. Reboot Debian, watch while booting, you should see a line like this:
- "Detected scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0".
- Your old ATAPI devices virtually don't exist any longer, you cannot refer to
- /dev/hd* as CDROM drives. Use the SCSI equivalents instead, /dev/sr*.
- 8. Become root, setup devices:
- cd /dev
- MAKEDEV sg scd
- ln -s scd0 cdrom # NOTE: or cdrw, first check which drive is here
- ln -s scd1 cdrw # NOTE: see above, maybe cdrom
- Check the new SCSI settings:
- wodim -scanbus
- Setup wodim's environment - edit /etc/wodim.conf:
- CDR_DEVICE=cdrw
- cdrw=1,0,0 4 8m
- cdrom=1,2,0 0 0m
- Insert the right values, the fields are described in the manpage
- of wodim. Alternatively, you may use these values as
- wodim-parameter or take a frontend with an own configuration
- scheme, then you don't need to modify /etc/wodim.conf.
- The columns must be separated by tabs.
- 9. It's done! Insert a CD and try "wodim -v -toc". To create your first CD-ROM, try:
-
- mkisofs -v -r -J /directory/to/be/written | wodim -v -dummy -
-
- (read wodim(1), "man 1 wodim", for details)
-
- 10. If you wish to allow non-root users to write CDs, you must give them
- permissions to do so. Set suid-root permissions on the executable,
- then add your users to the cdrom group ("adduser user cdrom") and
- let the user completely logout and re-login.
-
-