To give you a definitive response, a little more detail is needed. What is the model number of the drive you trying to use and what is the exact program name and version that you are using? Also, what is the data? Assuming you meant 6.2GB instead of 6.2MB, what are you telling the program to do exactly with this?
I have a USB Freecom +/- DL recorder, but it won't copy a 6.2MB disk to a DL (Ricoh) disk, but doesnt give a reason why, the program just rejects the disk. I am using Record Now Max, do I need different software or could I be doing something (which is usually the problem!)
I have a laptop with XP SP2 1GB RAM and plenty of hard drive, that has a DVD RW