You need to free up some space for your new macOS. You can use Apple’s in-built Time Machine or more advanced tools like Get Backup Pro if you want a bootable backup. To keep your data safe, create a backup before upgrading. Remember though, that a new macOS means a new start-wiping away the past. When we’re too excited, we tend to rush things. CleanMyMac X will help you quickly filter applications by 32-bit and get rid of them:

Once you install macOS 10.15, you’ll be warned about 32-bit apps not working on your Mac any longer. In Catalina, you’ll have to limit your Mac to 64-bit applications only. Mojave was the first macOS to stop admitting 32-bit apps to the App Store and the last to support them. Sometimes the reason why you can’t upgrade lies on the surface: It’s not too different from what we had last year, but take a look anyway. As usual, there’s a limited number of Apple devices that support macOS 10.15. Your to-do list for the upcoming upgrade:Įnsure your device is compatible. It will get to 100%, then do a few final items to complete the installer and make it bootable.Try free ✕ A few things before you switch to Catalina

Some flash drives will be slow, maybe 30 minutes. Then, you will see some numbers appear, showing the progress of the command. It will work.įinally, the terminal will ask you to press 'y' to start the command that you just typed, so type Y, and press enter.

Do that, you will NOT see what you type (it's a security feature, just type your password, then press enter. You will be asked to enter your admin password. You will see that disk, with its path, added to the line you have been typing.ĪND, press enter. Now, find the icon for your flash drive (the one you just erased. (notice there are TWO dashes, not just one) Next, type -volume, and add one space to that. You will see the full path to that file appear next to sudo. Launch your Terminal app, then type sudo, and add a single space.įrom the Resources folder that you left open, drag the file 'createinstallmedia' and drop it on your terminal window. Open the Library, then open the 'Resources' folder. Right click on that installer app, and choose 'Show Package Contents'. The Catalina installer app (Install macOS Catalina) should be in your Applications folder. Make sure it is formatted Mac OS Extended (journaled), and the partition Map is 'GUID' Erase that thumb drive, using your Disk Utility.

Update mac os 10.9 5 to 10.10