Please insert disk 2 @ installing call of duty modern warfare 3

Hello,
i play games pc.......i am a gamer and i love games and wanted to play call of duty modern warfare 3
but i have got some problem but cannot resolve it...
i installed disk 1 successfully but in between its asking insert disk 2... i have alreadt installed Daemon tool lite and also Power iso........ i tried to mount the disk 2 with both the softwares but its not working... i have tried many times and also searched in many websites and youtube also..etc... but i did not got any solution and i am still confused ... whats really missing and i need a extracted and deep answer and steps of it to be get solved .......... and my computer has i.3 processor and 1 tb hdd and 4 gb ram and intel graphics but i dont know what is really missing :( ......can any one help me ...............HERE with this problem........ please help me and this is my facebook username too Luqman Ahmed......... and i need a guider and gudance :)

Thankyou
yoursincerly
luqman