iMac rejects CD
First, on my iMac music, movie, and data CDs and DVDs will function without any problems. Second, blank DVDs and CD-Rs will function.
However CD-RWs will not function, each time one in inserted iMac will reject it after a spin up. SO, any idea what is going on.
Note: Right after I burned a CD-R with a music file and rejected it, I inserted a CD-RW and the same thing occurred, IMac rejected the CD.
Thanks
iMac, OS X Yosemite (10.10.3), iMac (20-inch, Early 2008)