this is a first question :)
I have a collection of CDs for AppDev course. it is CD-R cds. I run them before in my computer and they are work.
but recently when I try to run them. CD drive display that they are blank cds and they are not.
I tested running CDs on other computer. they worked correctly and they are not blank.
So the problem from my CD drive . How I can sovle this problem ??