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I am about to buy a new iMac. I will transfer all of the data from my old Mac to the new Mac using a time machine backup. Then I would like to sell the old Mac but first I have to erase all of my personal data and apps from the old mac's hard drive.
How should I do it.
iMac 21.5″, macOS 10.15
See "Before you ship your Mac" in
How to prepare your Mac mini for Apple Trade In - Apple Support
See "Before you ship your Mac" in
How to prepare your Mac mini for Apple Trade In - Apple Support
Great. Thanks.
erase a disk
