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You have to boot Mac into Recovery mode and format the hard drive or SSD to Apple file system first. If the drive was not partitioned or the partition table was corrupted, then you can not install macOS on Mac with the normal way. How to Install macOS on Mac from USB Drive (Advanced) Step 5: Agree the terms and conditions and wait for the installation process to be done. Click the drive name of your macOS bootable USB to start the installation process. Step 4: You will see all bootable devices attached to this Mac, including Macintosh HD and external USB or DVD. This will bring up the Startup Manager on Mac. Step 3: Hold the Power and Option key simultaneously for 15 seconds. This will make sure the Mac is powered off. Step 2: Shut down the Mac and wait for 1-2 minutes. Step 1: Insert the macOS bootable USB drive on a USB port of Mac computer. If the target Mac computer already had a macOS or OS X on it, then installing macOS from USB is straightforward and this is called the normal way. How to Install macOS on Mac from USB Drive (Normal Way)

Even you had issues during this process, it is not thing to be afriad as we have offered the troubleshooting guide as well.

We will share detailed steps on how to install macOS/Mac OS X from an USB drive. So many Mac users don't know how to perform a clean install of macOS on their Mac when the device was broken or could not boot into desktop. This is not normal case because macOS is very stable and have less bugs/virus than Windows PC. 2, 2020Īfter successfully created a macOS bootable USB, the next step is how to use it to install macOS from external USB drive.