It’s much better to create a dual boot system when you run the beta. If you’re clean installing the beta (and, by the way, that’s not something I would recommend.
#Clean install mac os x catalina download
If you’re reading this after Catalina ships, you can download it from the Mac App Store and then choose Quit when the installation starts. Create a bootable installer of macOS Catalina You can use Apple’s Notes app to make notes, as long as you sync them with iCloud. And you should make sure you have a copy of any licence codes that you’ll need when you reinstall applications. You should also make notes of settings for apps you use regularly – screen grabbing them is a good way to do that. Just make sure you have a complete, preferably bootable, copy of your current installation. You can use Time Machine, another backup app, or a cloning tool. You’re going to be erasing your startup drive completely, so you need a complete backup of everything. You must backup your Mac before you do anything else.
#Clean install mac os x catalina install
Download and install CleanMyMac - try a free edition of the app here.You can expect to free up tens of gigabytes of space, including old apps, and their leftovers. There are many free and paid tools to clean junk but the quickest option is to run CleanMyMac X. Tip: Clear out the junk before installationīefore the clean installation of macOS 10.15 Catalina it’s recommended that you first delete junk and dusty files from the current macOS.
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