this surprise me

[alfa2000]

hello

a friend bring me a cd & when i check it i find its actual size is 700 mb & the cd vendor is acer
now when i check it contents , i find that the size of the cd contents is about 1 GB , frankly i don't believe that !!!!

i copy the contect of the cd on my hard disk , it's true , it contains 2 folder 500 mb for each one

any one can explain me how i can create like this cd , i ask my friend , but he don't know cause the cd is not for him

waiitng ur reply
thank you