AppleAPFSMedia became uninitialized when preparing my Mac for sale?
I was trying to initialize and reinstall macOS Catalina on my MacBook for resale. But somehow a disk called "AppleAPFSMedia" becomes uninitialized. In Disk Utility, I can see three internal partitions or disks: the top-most AppleAPFSMedia, Macintosh HD, and Apple SSD AP0256J Media. I've tried multiple times to initialize AppleAPFSMedia to no avail. Can anyone help me?
You can boot into Internet Recovery Mode to initialize or format AppleAPFSMedia.
Note that initializing your startup disk will erase everything on your Mac. If you still have important files on your Mac, you need to
recover data from Recovery Mode
before proceeding with the following steps.
Shut down your Mac.
Press the power button, then immediately press and hold Option + Command + R.
Release the keys when seeing the spinning globe.
Select your WiFi network and enter the password when asked.
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