iMac reads DVD as blank
I just a received a Verbatim 16x DVD-R full of .pdf articles from a genelogical group.
My iMac (2008 Duo Core--10.8.4 Mountain Lion) with an OPTIARC DVD RW AD-5630A reads the disc as blank
My wifes iMac (2007 Duo Core--10.6.8 Snow Leopard) with a MatshitaDVD-R can read the articles.
Does anyone know why this is?
Thanks