C&C Gen's uses 2.6-9, it checks ATIP. This means it checks to see if the CD you are using is a CD-ROM or a CR-R. If it picks up that its a CD-R the game will not run.
CloneCD (and other progs like Alcohol 120%) can fool these checks and tell the protection that the CD is a ROM. In short, Yes you will need a prog to hide the ATIP for the back-up to work.
VH
