problem remaking the ISO-file

[ska_p_te]

I extract my ISO file to my computer where I do my changes, but then I write it on a cd, but it isn't booting.

what am I doing wrong?

[mukesh]

I extract my ISO file to my computer where I do my changes, but then I write it on a cd, but it isn't booting.

what am I doing wrong? hi
i am doing the same thing
i mean i want to make my own knoppix customized cd
plz tell me how to start
and where to start