You must make sure that the DVD that you burned is in FATX format. You must make an .xiso with appropriate program (i recommend Craxion), THEN burn to dvd. This is the only way the xbox drive will be able to read the data.
Also, for anyone interested, DVD2xbox is a great program for copying games as well as data disks to your xbox hard drive.
ya cause i have DVD +R and it says that the D: drive is empty!!!!!!!!
/ MAN THIS STUFF GETS FRUSTRATING!!!! I KNOW WHAT IM DOING BUT ITS NOT WORKING!!!!!