imac DVD burner not working
My DVD burner will burn DVDs. It can read commercial CD and DVD but when I try to burn a home made movie in iDVD it rejects all formats of disks whether DVD- or DVD+. It will not read read DVDs I have previously burned on this computer. It will read CDs I have burned on this computer. I bought a cleaning disk from Staples. Since the Staples cleaning disk the DVD drive began reading commercial DVDs. I lasted burned a DVD on December 10, 2012 less than a month ago without any issue. Do I need a beter cleaner? Solutions?
DVD
OPTIARC DVD RW AD-5670S:
iMac, OS X Mountain Lion (10.8.2), iMac 2009 2.93 GHz Intel Core 2 Duo