From ArchWiki
Warning: The legality of this process may be questionable. Refer to the copyright laws in your country for clarification. Playing backup games online may result in your Xbox 360 console being banned from Xbox Live. Follow this guide at your own risk!
Tip: Backups may only be played on an Xbox 360 with a flashed firmware.

Overview

Xbox 360 games come in two image formats: .iso and .000. They are burned on dual layer DVD+R discs. This requires a dual-layer DVD burner. No specific brand or burner is needed. In order to maximize the success of your burn, you should burn at the slowest speed your burner and media allow.

Please note that games must be burned onto DVD+R DL (Dual Layered), as DVD-R DL would not work.

Burning ISOs

Note: You can use Imgburn + Wine to burn ISOs (yes, XGD3 burns work with BurnerMAX drives, and since Imgburn 2.5.8 the builtin "BurnerMax Payload" feature works as well).

Burning an ISO is best done through the command line with growisofs. This is found in the dvd+rw-tools package.

There are other applications you can use to burn the image (k3b, gnomebakerAUR, etc) but you may miss some configuration options and end up with a dud burn. Use the following command to burn the image to disc.

XGD1 (Xbox1):

# growisofs -use-the-force-luke=dao -use-the-force-luke=break:1913776 -dvd-compat -speed=2 -Z /dev/sr0=x.iso

XGD2:

# growisofs -use-the-force-luke=dao -use-the-force-luke=break:1913760 -dvd-compat -speed=2 -Z /dev/sr0=x.iso

XGD3 (iXtreme Burner Max Firmware):

# growisofs -use-the-force-luke=dao -use-the-force-luke=break:2133520 -dvd-compat -speed=2 -Z /dev/sr0=x.iso

XGD3 (truncated):

$ truncate --size=8547991552 x.iso
# growisofs -use-the-force-luke=dao -use-the-force-luke=break:2086912 -dvd-compat -speed=2 -Z /dev/sr0=x.iso

Replace /dev/sr0 with the path to your dual layer drive. For most systems it will be /dev/sr0.

If everything has been set up correctly you should see a messages like this:

Executing 'builtin_dd if=TalesOfVesperia.iso of=/dev/sr0 obs=32k seek=0'
/dev/sr0: splitting layers at 1913760 blocks
/dev/sr0: "Current Write Speed" is 2.5x1352KBps.
3538944/7835492352 ( 0.0%) @0.8x, remaining 45:39 RBU  89.7% UBU   7.1%

The burn should take around approximately 40 minutes at 2.4x write speed, depending on the size of the iso.

xbox360_burn

It is obviously possible to create an executable file containing the command to burn DVD, as such, someone has created a bash script to allow for a more user-friendly interface. It has since been rewritten into python.

To burn, you then only have to use this command:

# xbox360_burn -ib /dev/sr0 rom.iso

Replace /dev/sr0 with the path to your dual layer drive. For most systems it will be /dev/sr0.