As a workaround, try holding the Command-Option-I keys simultaneously when you insert the DVD-R disc. Keep holding the keys down until the DVD disc appears.
Holding these keys down forces the computer to make the disc available on the Desktop as an ISO 9660 format disc instead of a UDF formatted disc.
Note: If the disc has a DVD-ROM section containing a high number of items, the disc may take a little while to appear.
This document will be updated as more information becomes available.
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