I purchased a box of DVD-RW discs. I burned a 700 MB .avi file to the disc last week. I now want to burn another 700 MB .avi file to it this week, but the disc seems locked. I created a new burn folder with the new file and selected burn, inserted the DVD-RW, yet it must require a blank disc because the "insert blank disc" box won't go away.
When I go to Get Info on the DVD-RW icon on the desktop, the box to read & write is grayed out, so the disc is basically locked. And when I try to drag a file to the DVD-RW in Finder, it says it cannot be modified.
What do I need to do in order to create a DVD-RW that I can continually add files to?
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