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#How to clean install mac os sierra from usb pc how to#
#How to clean install mac os sierra from usb pc mac os x#
#How to clean install mac os sierra from usb pc mac os#

Updated November 2020: Updated for macOS Big Sur's public release. 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.(If you use the trial version, wait 15 seconds. Click Continue again when the installer window appears. (If you have any data on the flash drive, remember to back it up since this process will erase everything on it.) Right-click the TransMac app and select the Run as administrator option.Click on Reinstall a new copy of macOS.Step 4: Reinstall a new copy of macOS Big Sur

#How to clean install mac os sierra from usb pc how to#

Follow the instructions for how to create a bootable macOS Sierra installer on a USB flash drive.

If Scheme is available, select GUID Partition Map. To perform a clean install on the startup drive, first create a bootable copy of the installer, boot from it, and erase the startup drive before installing macOS Sierra.

If your Mac is using APFS, select APFS from the format list.

#How to clean install mac os sierra from usb pc mac os#

If your Mac is using HFS+, select Mac OS Extended (Journaled) from the format list.

Enter a name for the file to be destroyed (Like macOS Mojave or something).

2) Format it as GUID Partition Map, Mac OS Extended (Journaled) using the Disk Utility application. 1) Find yourself an 8GB or larger USB drive or external hard drive partition. In this article, we’ll show you how to make bootable USB so you can install. Give the USB stick a name, then click Erase. Instructions to install macOS Sierra on older Macs. Clean and Optimize Your Mac to Improve Performance with Outbyte macAries. Click the Erase tab and make sure Mac OS Extended (Journaled) is selected in the format tab.

Plug in the USB stick and launch Disk Utilities. I used a thing called DiskMakerX7 to create a bootable 16GB USB drive named 'Mac OS High Sierra Install Disk' It seemed to boot OK, so I selected 'Install MacOS' Now, when I boot the iMac (usb not inserted), all I get is a 4-choice menu: Restore a Time Machine Backup, Install MacOS, Get Help, and Disk Utility. When it’s finished, the installer will launch. Select the Erase tab located next to the First Aid button at the top. In the window, at the top of the left bar, select your Mac’s Main Drive (it looks like a MacintoshHD).

#How to clean install mac os sierra from usb pc mac os x#

Click on Disk Utility in the OS X Utilities selector.Ĭlick on the Erase tab at the top of the window. Moreover, how do I do a clean install of Mac OS X on a USB drive Download macOS High Sierra from the App Store. Use the arrow keys to choose your USB drive with macOS Sierra installer.

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.