Hi hope you can help I recently upgraded my apple mac mini 2014 to catalina and it has made my mac very very slow. is it possible for me to go back to high sierra and create a bootable disk please i have a headache with catalina and i should have not bothered updating. I don't seem to be able to find the installer anywhere.
Cheers for help guys
Rob
Mac mini, macOS 10.15
Did you make a full back up of your mac before you decided to upgrade to Catalina.
You can download High Sierra from here,
How to upgrade to macOS High Sierra - Apple Support
When trying the link use Safari, do not use Firefox it does not work.
Go to Section 4 and click on Get macOS High Sierra.
When it has downloaded create a bootable USB installer using these instructions.
How to create a bootable installer for macOS – Apple Support
You will then need to boot to the bootable USB installer use Disk Utility to
erase the Disk (make sure you have selected Show All Devices from the View menubar item.)
Highlight the Disk not the indented Volume, click Erase.
give the Disk a name,
Format: APFS,
Scheme: GUID Partition Map
Click Erase.
Quit Disk Utility
Then select Install OS
and press Continue.
When High Sierra has installed you can use Migration Assistant to migrate
only your personal data from the Time Machine backup you made before you decided to
downgrade to High Sierra.
Did you make a full back up of your mac before you decided to upgrade to Catalina.
You can download High Sierra from here,
How to upgrade to macOS High Sierra - Apple Support
When trying the link use Safari, do not use Firefox it does not work.
Go to Section 4 and click on Get macOS High Sierra.
When it has downloaded create a bootable USB installer using these instructions.
How to create a bootable installer for macOS – Apple Support
You will then need to boot to the bootable USB installer use Disk Utility to
erase the Disk (make sure you have selected Show All Devices from the View menubar item.)
Highlight the Disk not the indented Volume, click Erase.
give the Disk a name,
Format: APFS,
Scheme: GUID Partition Map
Click Erase.
Quit Disk Utility
Then select Install OS
and press Continue.
When High Sierra has installed you can use Migration Assistant to migrate
only your personal data from the Time Machine backup you made before you decided to
downgrade to High Sierra.
thx very much Rob
Downgrade os on my mac mini
