My sister has a Mac Laptop she had for maybe a month (new not used) & we use PCs so we know nothing about Macs. We have a CD-RW we formated with a PC, I don't think it can read it which seems odd to me. A friend who has a Mac, told her a CD-RW formated in a PC can't get formated in a Mac. It doesn't sound right to me, but since none of us use a Mac or ever did I am not sure.