Can i make a 4.1 gb cd into a 8.1 gb cd?
No, if a CD is 4.1gb that is all the storage space it contains and cannot be increased.
no. there is only a limited amount of space.
A cd only holds 650 megabyte (0.65 gig) of information. A dvd hold 4.5 gig and a Dual layer Dvd hold about 8 gig.