Does anyone know how to copy Diablo 2 play disc i've tried many things

[bobthebuilder45]

hi i copyed diablo 2 install disc good ,but the play disc copys but when you play it the game asked 'check your cd rom to see if diablo 2 play disc is inserted.' So it doesn't work so does anyone out their know where to get a patch or know how to copy the diablo 2 play disc.

!!!!!PLEASE HELP ME!!!!