I'm in 10.14.5 and have just downloaded the FULL Mojave 10.14.6 installer ( 6.04gb. ) from the app Store. 1. Start App Store 2. Search for "Mojave" 3. Check the Mojave page - look for "6.04gb" ========================================= 4. There should be a "GET" button at the top right of this page. Hit it. If you get a "Can't find etc. message " . . try .. again and again . . it will eventually will find it. NOTE :If you already have any Mojave prior installers in your Applications folder - You WON'T see the "GET" button. =============================================== 5. After the download is finished the Mojave installer will POP up. Don't install yet ! Go to Applications - look for "Install macOS Mojave" - COPY this to a safe place for any future emergency installations. 6. Now you can start a clean, full installation. =================================== The download was surprisingly quick ! About 15 minutes. NOTE : For a full, clean install you "may" need to have an EFI flashed GPU. I will be using a flashed HD 7970 and post install will replace my MSI Armor RX 580 8gb.