Once you create a bootable High Sierra USB installer, it’s time to install your macOS. Before installing macOS High Sierra from a USB, make sure to back up your important data first as this process will erase all the main drive’s data. To install High Sierra from a USB using your startup disk drive: 1. Go to System Preferences.
These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.
I created a Yosemite boot USB, from the App Store version 10.10.1. When I hold option during Boot, the USB drive doesn't show up on the menu. I have an aluminium MBP, bought in 2009. After you have made the High Sierra bootable installer, you can proceed with the next step of formatting the hard drive. 3: Format & Erase the Mac Hard Drive. With the MacOS High Sierra boot drive connected to the Mac, reboot the computer and hold down the OPTION / ALT key until you see the Startup Manager screen. At the boot drive selection. If you want to do a clean install of macOS Sierra, or you have multiple Macs to install it on, then a bootable flash drive for is your best bet for easy installation. Here’s how to make one. How to Create macOS High Sierra Bootable USB Installer on Windows. Whether you want to install High Sierra or reinstall it because the first installation wasn’t successful or if you want to install macOS High Sierra on many Macs, you’ll definitely need a bootable USB. Here’s how to Create macOS High Sierra Bootable USB Installer on Windows. Download MacOS High Sierra DMG Without App Store. If you looking on the internet a MacOS High Sierra DMG So, you come to the right place now a day shares with you a Mac OS High Sierra 10.13.6 direct download without an app store.
MyVolumein these commands with the name of your volume.
* If your Mac is using macOS Sierra or earlier, include the
--applicationpath argument and installer path, similar to the way this is done in the command for El Capitan.
After typing the command:
Yto confirm that you want to erase the volume, then press Return. Terminal shows the progress as the volume is erased.
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
For more information about the
createinstallmedia command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter the appropriate path in Terminal:
A bootable installer doesn't download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model.