

In all these cases, you will need to first erase the entire SSD, so make sure you have your user data backed-up in a place you can migrate it from after you get Mojave running. There’s one more way to create a mountable image of the Mojave Installer for you using a Python script that Mac Admins in IT departments frequently use, but it’s a bit more complicated, so get back to me only if these other methods all fail. If all else fails, you can still run those major 32-bit apps in a VM like Parallels installed along side Catalina. My 2019 iMac came from the factory with Catalina already installed on it. When the download of Mojave from the App Store is completed Catalina decided that Mojave cannot be installed and makes the download vanish. It does not go into the trash or anywhere else on the drive, I used every search tool I own to be sure I was not mistaken. Tried 4 times to get the download and could not get it to stay on my drive.

Unfortunately the terminal command in Catalina that you so kindly furnished does not work because it says that the format is not recognized. Terminal says that the command is not recognized.Īnd, the Terminal Command to download the full installer > softwareupdate -fetch-full-installer -full-installer-version 10.14.6 does not work either. Finally the will not download Mojave…it sends you back to t he App Store which has the aforementioned problems. The Parallels solution is interesting but if you cannot download the installer because Catalina blocks it what can you do? As I said last night Apple Support told me that it is impossible to download or install Mojave with the 2019 5K Retina iMac I own, that Apple does not want users of this iMac to use anything but Catalina. If you have an iMac like mine and it was built in 2019 and it came with Catalina installed, you CANNOT get Mojave to install from Recovery.
