Discjuggler settings.. do they affect the disc??

Hey,

When copying a discjuggler dreamcast self boot image in discjuggler, i noticed some options in the 'advanced' tab, these include mode, block, post-gap etc. I have been told to set the options to Mode 1 and turn post-gap off. Are these changes necessary? do they affect the burning process?

[sixdsix]

The CDI tells DJ everything it needs to know.