I start the installer, point it at my external SSD, and it starts chugging, looking all OK. The progress meter says 5 minutes. After around that time, with nothing unusual reported, the screen goes black and the restart sequence begins. But it restarts from my internal disk and the new installation is not complete.
Second attempt, I followed instructions to create a bootable USB installation disk on another USB drive, booted to it and started the installation from there. Same result.
Any suggestions?
Installing Macos Catalina On Vmware
An Error Occurred Installing Macos Catalina
Complete the process and install macOS Catalina on that computer. Downloading macOS Catalina Install app works fine on my of newly devices but it could be problems for old Macs even it is officially supported by Catalina. If this is the case, then you have to patch the OS and install Catalina again. However, you need find a third-party app to. The Catalina install files will start to download. The installer file will be multiple GB. Big Sur is 12.6GB, for example, so expect downloading to take a while. For older versions of macOS. MacOS Catalina is a free upgrade, but you still need to pay for Mountain Lion. Our advice is to install the latest version of macOS or OS X that is compatible with your machine. This gives you the best security against malware and allows you to enjoy the latest available features. Installing a new version of the Mac OS is generally a fairly pain-free process; this trend continues with macOS Catalina. Even so, it’s a good idea to review our Rocket Yard guides for a clean install of macOS Catalina as well as an upgrade install of Catalina. Install macOS Catalina After setting up BIOS, the next step is to install macOS Catalina. Follow the steps below for the installation. Turn on your PC 2. Press F12 to enter boot menu. The boot menu key may not be same for all. If you're having a ASUS Motherboard, use F8, use F11 for MSI and AsRock Motherboards).