If you are using Windows, Apple recommends this for macOS Mojave compatibility – so you will need at least 6 GB minimum for this method to work. Note: You can use a USB stick that’s already formatted to exFAT.
You can download Disk Drill for free if you want to check the amount of storage that it has.
It doesn’t matter what kind of file it is, either the application, picture, video, or archive format since they’ll all fit depending on their size and quality. We’d like to point out that it would be good if you delete at least some of your files just so it saves more space on your flash drive.
Choose your disk where you would like to install macOS High Sierra if it’s different than your current operating system drive (note that down somewhere) then click Install.Launch the installer, accept the EULA terms and click Continue.Get a copy of the 10.14 or 10.13 installer from this link.How do I downgrade from macOS Catalina to High Sierra? As with any computer procedure, there is always the risk of losing data if something goes wrong so it is best to be safe than sorry by making sure you have all your files backed up somewhere safe before continuing with this article. You will need a backup of your data before beginning this process. Siri is not compatible with macOS Catalina.
Apple has removed 32-bit support so old software such as Final Cut Pro 7 and QuickTime Player 7 won’t install.