No space on cd

i can’t burn anything in alcohol 120. it always comes up saying there is not enough space on the disc i tried burning a 300mb cd, put in a brand new blank disc and it still said not enough space, i’ve tried 3 different images and got no discs out of it! can someone help me?

ok so i found out it was a malfuctioning twinpeak tool but i don’t know what to use now… what can you use with alchoal 120 to make no emulation (works with any pc) copys of securom?

What settings have you used to make the image and what protection exists on the original?