Want to upgrade to Mac OS High Sierra and it shows MediaKit reports not enough space on device for requested operation

Solution 1:

Typically this means you need to erase your drive. It could be a permanent storage error, but most of the time you can fix things by erasing the entire drive and reinstalling.

  • MediaKit reports not enough space on device for requested operation
  • Unable to format Mac internal drive (disk0)

Do you need time to back up or instructions to erase and install macOS?