How to dump games
The SYSTEM246 games, unlike retail PS2s, will have game data and software splitted in more than one storage device:

Dump Dongle
if you posses a jailbroken retail PS2, you may dump all your dongles into an USB thumb drive with Memory Card Annihilator
If you posses a PS3 CECHZM1 Memory Card adapter, you may use PS3MCA-TOOL to dump your dongles directly to your pc. just make sure to use the -imgecc dump command!
Dump game Media
As shown on the image above, game media can be either CD, DVD or HardDrive
Hard Drive
Just do a sector by sector dump. just like with Retail PS2 HDDs, we recommend HDD RAW COPY TOOL
DVD / CD
Dump the disc into an ISO9660 image. Eventually, the emulator will support CHD just like "play!"
You may use the disc dumper of your preference... be it ultraiso, PowerISO or ImgBurn. or whatever program you like and trust