Help with RAM...enable?



I have a Matshita DVD-RAM UJ-841S (Toshiba Satelite A105, XP). I burnt some RAM disks a few weeks ago that now will not read. I seem to remember some setting that would disable RAM and wonder if something has happened to disable it. After searching, I can not find it. But since both disks won’t read in this drive but will read in my desktop, it’s not bad disks. What am I missing??