When installing, ensure your system is plugged in to power, or the update will not be installed. Running Catalina without full graphics acceleration will result in extremely poor system performance. I get an error saying "The installer is damaged, and can't be used to install macOS" This happens when using a release of the macOS Catalina Installer App that is incompatible with the version of Catalina Patcher you are using.
Download the latest Catalina Installer using the latest Catalina Patcher version. Some third-party applications do not open or crash on launch This is an issue Apple introduced in To work around this, immediately relaunch the affected application after receiving the crash message.
After that point, the affected application should no longer experience this crash. During installation, the machine keeps booting off the installer volume, and will not complete the second phase of installation This usually occurs on machines that support High Sierra macOS Installing High Sierra on these machines will update the machine's system firmware, allowing it to boot from an APFS volume.
We will show you a way to get the following macOS installers:. In fact, we tell you how to get copies of Leopard, Lion and Mountain Lion too! This is where you can get it:. You can still download the installer for Monterey from the Mac App Store — as long as you know where to find it — searching the Mac App Store will not work.
You can still download the installer for Big Sur from the Mac App Store — as long as you know where to find it on the Mac App Store since searching for it will not work.
You can also download the installer for Catalina from the Mac App Store — as long as you know the magic link. It is also possible to access the Mojave installer via this link to the Mac App Store. Note that as above, for this link to work you need to be running Safari and you need to close the Mac App Store app first.
If the Mac App Store app is open this redirect will not work. It is also possible to download High Sierra via this link. Use Safari, close the Mac App Store app first. Apple provides dmg files of these older macOS versions — you need to download them in Safari.
A disk image named InstallOS. Another issue is if the link takes you to the correct page in the Mac App Store, but you see an Update not found error message when you try to download it. In that case we suggest you try to download the installer via that link using an older Mac. You may also encounter issues if you are trying to download an older version of macOS that your Mac cannot support.
Usually when Apple introduces a new Mac it will not be able to run the version of macOS that shipped before the one installed on that Mac. The older macOS might not support certain components in that Mac, for example. How easy they are to find will be determined by the version of macOS running on that Mac. However, when Apple introduced Mojave the Mac App Store changed, and these installers can no longer be searched for or found in the purchased section of the store.
Although we do have redirect links in the section above to each of the relevant pages on the Mac App Store. Alternatively ask a friend to download a copy of the installer from the Mac App Store for you. We run through this method in the section below. If you do then the installer will be deleted.
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WebDownload Download Security Update (Catalina) macOS Catalina Security Update is recommended for all users and improves the security of macOS. . WebNov 3, · How to download macOS. Download and install current or previous versions of the Mac operating system. Apple recommends using the latest (newest) macOS that . WebApr 18, · Downloads Operating Systems macOS Catalina macOS Catalina gives you more of everything you love about Mac. Experience music, TV, and podcasts .