Ugh. I hate this question. Darkforce and Samutz misunderstand what the OP is asking.
To copy a Wii Backup Disk (not an original!!!) put it in a DVD drive in your computer, any DVD drive it doesn't matter. Run your DVD copy software to make an image file (iso) from it. Burn said iso. You DO NOT need the LG drive for this.
To copy a Wii Original Disk put it in your LG GDR8164 drive and run Rawdump. Rawdump will make the iso. Burn said iso with your favorite burning software.
If you want you can use the SD Dumper tool with any modchip with either an original or a backup Wii or Gamecube disk.
Can we sticky this question? I swear it's asked at least once a week and someone always gives the wrong answer because they misunderstand the question.