Burning securom 7 Need help

i have followed phillambers tuturorial burning securom 7 w/o emulation to a t , the only problem is when i go to burn the patched image it says not enough space for writing process . the image is only 98.5 mb , do you know what i am doing wrong , or do you have a solution . I have followed everystep 100%

thanks in advance

using alcohol 120% 1.9.8 and Aray Scanner