I have a problem installing macOS Catalina on my Macbook Air (Mid-2013, model A1466).
I created a bootable USB drive with macOS Catalina. Then I restarted my Mac from it and, in Disk Utility, I formatted my SSD (connected with an adapter) with GUID scheme and MacOS Extended.
After that, I installed Catalina on it, but when my Macbook Air restarts, I see a folder with a flashing question mark. When I try to choose my SSD as startup disk I cannot see it on the list. Have you any idea what is going wrong?