Can all DC games be selfbooted?

[ascendantP]

I noticed that site that sell dc backups have some DC games that can be selfbooted and some that still require a boot disc.

I also have a question on using cdrwin to burn self boot games. After burning the first session with your audio track. Some tutorials say to check postgap and some tutorials say not to check the postgap to record the iso image. Which is right? I never get my boot games to self-boot. Any help is appreciated