How to test file iso image before burn to cd?

[pizzathief]

After remastering knoppix, how to test the iso image, is that success or not before i burn to cd except with Qemu?

I'm not quite sure what you mean by "except with Qemu?". I do test my remastered ISO's with qemu, and use the following command

qemu -cdrom knoppix-cd.iso -boot d -m 512

normally 256M is fine , but my latest recipe needs 512 to work well at the moment.