bloody windows xp

heeeeeelp me plz if you can,how do I make windows recognise a 800meg cdr as it keeps telling me it cant put more than 702meg on the disk thats in the drive and its a 800 meg blank cd that i put in, BLOODY WINDOWS

 

The last file you may be trying to put on the disk may be larger than the 98mg's remaining.

 

Sometimes the ISO image (which is the virtual file that is being transfered) comes out larger than it actually portrays to be. For example, technically you should be able to fit around 400 songs on a cd since songs are only about 2-3 mb a piece and the cd can hold 800 mb. But since the ISO image is different you can only fit around 50 songs max.