Erasing a CD or DVD
If you want to reuse a CD-RW or DVD-RW disc, you need to erase it first, which you can do with Disk Utility. Before you start, there is one thing you need to know. You can't erase a standard CD or DVD that was a previously recorded CD-R aor DVD-R disc. During the process, you have the option to select Quick Erase. When you select Quick Erase setting, the contents on the CD or DVD gets overwritten when new information is placed over it. If you don't select Quick Erase setting, the contents is overwritten with zeros to completely erase the CD or DVD, which takes longer to finish.
Erase a CD or DVD
Open the Utilities folder, ...
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