Open that app from your Applications folder to start installing the operating system. Safari will download the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. macOS High Sierra can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion.macOS Mojave can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion.macOS Catalina can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks.macOS Big Sur can upgrade Catalina, Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks.After you've downloaded the installer from the App Store, the installer will open automatically. Some or many of the Application already installed may required update or upGrades to 64 Bit Versions.Safari uses these links to find the old installers in the App Store. Suggest using Go64 to find 32 bit application before attempting the upGrade. Catalina, Big Sur & Monterey supports only 64 bit and there is no workaround. Notation - Mojave is the Last version to support 32 bit applications / extensions and Drivers. Make Time Machine Backup is very useful and can be used to Revert to Previous Working macOS The above is from observations on the Apple Support Community Forums and IMHO If this is a Production or Mission Critical Set-up - a more prudent and measure approach is suggested. Then there are those who attempted and had less than good results. MacOS High Sierra 10.13 hardware requirementsĬaution - jumping over all the newer versions and directly to Big Sur / Monterey on Qualifying computers is Technically possible - there are those who have attempted and were successful. MacOS Catalina 10.15 hardware requirements Credit to Contributor Big Sur 11 hardware requirements

If no ” Get Button “ Replace the https in the page's address to macappstore. Safari will open a redirect and open the Apple Store where the download can commence. For Best results use Safari to commence the download as Others may not work. With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there. Improved window management, quick and responsive interface, spotlight search, and enhanced graphics were the prerequisites of El Capitan OS. The Age of this computer will Govern what newer version of macOS it will Qualify to install. OS X El Capitan (10.11) was launched on 25 September 2015, and it is an improved version of OS X Yosemite (10.10).

Macbook os x el capitan