HOW TO DOWNGRADE MAC OS HIGH SIERRA TO SIERRA INSTALL

HOW TO DOWNGRADE MAC OS HIGH SIERRA TO SIERRA INSTALL

> Only works on Intel Based Apple Computers.Д®xtra Special Notation regarding the Touch ID equipped Apple Computer.ДЄbout Startup Security Utility and Must Enable from Recovery Mode the ability to boot from External Drive Before AttemptingДЎ - Shutdown computer and disconnect all external drive Except the newly created Bootable Installer.Дў- Restart and immediately hold the OPTION key until the Startup Manager appears and choose the USB Drive.ДЈ - It will present options > Disk Utilities > View > View ALL attached Drives.Д¤ - Choose the Upper Most Drive ( not the volumes indented and list below ).ДҐ - The drive normally is called Apple Media or Apple SSD - that is the drive to Erase and format as APFS with the GUID Partition Map.Д¦ - Once that is done > backup out of Disk Utilities and choose install macOS.Д§ - Follow the prompts and it may automatically reboot several time.ДЁ - Upon a final reboot - Setup Assist will present with the newer version of macOS. Once that is done read on for preparing the Destination computer This means - if the computer being used has never run High Sierra or is TOO New to running High Sierra - that computer can not be used for this operation Example : Bootable Installer of High Sierra would have to be done on a computer that Qualifies to run High Sierra. This will have to be performed from a Qualifying Computer to run the version of macOS to be made on the Bootable Installer.

From the OS X Utilities, click Disk Utility.

While the Mac restarts, hold down Command+R. To perform this action will require booting from a Bootable Installer. Click on Apple icon at the top-left corner of the screen on your Mac and select Restart.

This Method will Wipe ALL DATA and there is No Recovery - Period

How to downgrade mac os high sierra to sierra