![]() ![]() Open /Applications/Install*/Contents/SharedSupport/InstallESD.dmg (assuming the Catalina or Mojave Installer App is in /Applications)Ģ. Turn the Mac on and hold the Option key down as it loads up. Insert the flash drive in the unsupported Mac. Add NVRAM boot arg (or Clover ist boot arg on a hack) -no_compat_check to enable system to boot to final completed Mojave or Catalina install. Insert the USB drive and then choose to Create a Bootable Installer. macOS Installer App eg for Catalina beta or Mojave downloaded to /ApplicationsĤ. An original, untouched copy of OSInstall.mpkg from High Serra InstallESD.dmg - attached OSInstall_10.13.6.mpkg.zip save to your ~/Downloads folderģ. Mac or Hack capable of and running High Sierra 10.13.xĢ. Even if you did manage to get a copy via third-party means, code baked into the install will stop it from running on unsupported hardware, but there is a workaround. The procedure below will allow Macs or Hacks able to install High Sierra to also install Catalina or Mojave (eg SMBIOS MacPro5,1, iMac11,3, MacBook Pro7,1 which have been unsupported in macOS 10.14.x and 10.15beta) -credit to post.ġ. The problem is that, if you’re running an older unsupported machine, macOS Catalina simply won’t be available to download via the App Store. Fortunately, it is still possible to substitute High Sierra’s Apple Signed OSInstall.mpkg inside the Catalina or Mojave InstallESD.dmg by making it R/W. In Catalina 10.15beta, the above method no longer works since Apple is checking OSInstall.mpkg for its file signature and the mandatory requirement in Catalina to install to 2 separate apfs volumes necessitates using the original Catalina macOS Base System Installer. This installs the macOS installer into your Applications folder. pkg file, then follow the onscreen instructions. Click the link to download a disk image (.dmg) file for that macOS. In Mojave 10.14, posted a method to patch the distribution file in OSInstall.mpkg to enable the Mojave installer to install on unsupported machines (with or without graphics card metal support). Follow the onscreen instructions to install macOS. When running Catalina on an unsupported Mac, my experience has been the OS does not do any Apple provided updates. Often for economic reasons, Apple prevents the Installer.app for its latest macOS from installing on older machines perfectly capable of running it eg macOS 10.14 Mojave on Unsupported Macs Thread. Browse or search for any items related to the app you uninstalled and them move them to the Trash. Patch Catalina or Mojave macOS Installer App for Unsupported Machines With Finder open, click Go > Library from the menu bar or Go > Go to Folder and enter: /Library. ![]()
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