Updated November 2020: Updated for macOS Big Sur's public release. Disk Drill: Mac OS X El Capitan 10.11.6 or later: Analyze Mac hard drive space, Recover deleted files, Create byte-to-byte disk image: Available: 8.8: MacCleaner Pro: Mac OS X El Capitan 10.11 or later: Speed up Mac in one-click, Remove unwanted add-ons, Clear logs, cache, & cookies: Available: 8.7: Daisy Disk: Mac OS X Yosemite 10. Questions?Īny questions about performing a clean install? Let us know below in the comments. Agree to the software terms and conditions.Īre you in the market for a new MacBook? Check out our favorites for the year.Click Continue again when the installer window appears.Click on Reinstall a new copy of macOS.Step 4: Reinstall a new copy of macOS Big Sur If Scheme is available, select GUID Partition Map.If your Mac is using APFS, select APFS from the format list. It basically erases the entire content of your chosen drive and installs a fresh, smooth version of the new operating system which is downloaded El Capitan Mac OS X in this case. If your Mac is using HFS+, select Mac OS Extended (Journaled) from the format list. Download El Capitan and install fresh the Mac OS without upgrading the current Mac OS version The second method of installation is the clean install method.Enter a name for the file to be destroyed (Like macOS Mojave or something).Restart your Mac, hold down the Option key when you see the Apple logo. Now, we will attempt to remove everything from the current OS and reinstall a new copy of OS X Mountain Lion. Click on Disk Utility in the OS X Utilities selector.Ĭlick on the Erase tab at the top of the window. So we’ve downloaded a new copy of Mountain Lion, copied it over to the USB drive and made it bootable.Hold down Command-R when you hear the startup chime (or the screen turns black on newer Macs) and keep holding the keys until your computer reboots.Connect your Mac to the internet via Wi-Fi or Ethernet.
How to create a bootable installer for macOS Big Sur.If you don't create a bootable drive for macOS Big Sur, you may have to install an older Mac operating system first and then upgrade to macOS Big Sur afterward. You'll need a copy of macOS Big Sur to perform a clean install later on. Step 2: Create a bootable drive of macOS Big Surīefore you erase your current operating system, download macOS Big Sur from the Mac App Store.