Your computer should then install the latest version of OS that it can install. The installer for OS X El Capitan downloads to your Downloads folder as a disk image named InstallMacOSX.dmg. Enterprise administrators: Download from Apple, not a locally hosted software-update server.
Re-install MacOSX: click on " Reinstall Mac OS X" > "Continue". Download on a Mac that is using macOS Sierra 10.12.5 or later, or OS X El Capitan 10.11.6.Select the Mac OS Extended (Journaled), give a name to your disk and click on Erase. Apple iMac Software Update Apple iMac Software Update macOS.Select the startup disk and go to the Erase Tab.The hard drive will begin to erase all data, including the Operating System, software, and user information from the drive. All you have to do is restart your Mac and boot in Recovery Mode (Command + R), then click on Reinstall macOS. If you’re not ready to go celebrate because the installation didn’t work, you can try to reinstall Big Sur.
And go celebrate How to reinstall macOS Big Sur. While this can be a damper, it doesn’t mean you cannot diagnose the problem behind it.
It is possible that you might not be able to reinstall your Mac OS X successfully using the Internet Recovery Mode. In the Scheme field, select GUID Partition Map. Click on Install macOS to confirm your action. Part 3 What to Do when Mac Internet Recovery Method Fails. Select " Disk Utility" and click on Continue. Note: If APFS is not an option, select Mac OS Extended (Journaled) instead.Turn your Mac on, while holding the CMD + R keys down.
Also, it is advised to make a time machine back up of your computer if possible before following the procedure. To reinstall your Mac's OS without an installation disc you need to firstly make sure that you keep your Mac turned on during the whole procedure, and that your Mac is connected to the internet. In this article we will show you how to reinstall Mac OS without disc. Choose a user from the list who has administrative authority.
Hold the power button on your Mac until you see the startup options. MacOS includes a recovery partition that allows you to easily erase all data on your Mac and reinstall your OS without an installation disc. To reinstall macOS on your Apple M1 computer and return it to factory settings: Shutdown your Mac.