Only then reset it to APFS AND don’t change it to Mac OS Extended.

It’s indeed confusing when re-formatting your Mac’s hard drive when using macOS High Sierra, Mojave, Catalina and above! Here’s what we understand on the question of APFS or Mac OS Extended If your Mac shipped with its hard drive already APFS-formatted In particular, they report getting the error message “Could not create a Preboot Volume for APFS install.” Many users have encountered problems when resetting their Macs and MacBooks using APFS. MacOS High Sierra and above use Apple’s latest file system called APFS. Resetting a Mac with APFS (Apple File System)?

Other ways to reinstall macOS (not factory reset).

If you’re selling or giving away your Mac.

Factory Reset MacBook Air and other Macs With macOS Recovery.

4) Deactivate Programs and Remove Other Authorizations.

Checklist before you start ANY factory reset.

Here’s what we understand on the question of APFS or Mac OS Extended.

Resetting a Mac with APFS (Apple File System)?.

To get information about viewing and optimizing storage space on your Mac: Open Storage settings. To get information about warranty and repair services for your Mac: Open About settings. To review information about memory usage for your Mac: Open Activity Monitor. You can also check the following to learn more about your Mac: If you call Apple Support, you can assist the support technician by providing a copy of your system configuration. Send a system report to Apple: Choose File > Send to Apple. Save a system report: Choose File > Save, then enter a name and choose a location for the report. Print a system report: Choose File > Print. The report includes most of the hardware and network information, but leaves out most of the software information.

See a shorter report: Choose File > Show Less Information. The report could be a few megabytes in size. See a longer report: Choose File > Show More Information. To view, print, save, or send your report to Apple, do any of the following: Tip: You can also press and hold the Option key, then choose Apple menu > System Information to open the system report.

Mac os high sierra macbook air 2011