Release the key when you see the Startup Manager screen showing available boot drives.
Select the USB drive from the left sidebar (select the root drive, not just the volume). Click at the top.
Move the completed DMG file from your temporary folder to your desktop: mv /tmp/HighSierra.dmg ~/Desktop/ Use code with caution. macos high sierra 10131 dmg
Your Mac must be running OS X Mountain Lion 10.8 or later to upgrade directly. How to Get the macOS High Sierra Installer
Release the key when you see the Startup Manager screen showing the available boot drives. Select and press Enter. Release the key when you see the Startup
Apple no longer distributes the 10.13.1 version of High Sierra directly. Its official downloads now point to the final update of that OS, version 10.13.6. Consequently, finding a safe and authentic copy of the specific 10.13.1 update requires careful navigation. Below are several approaches you can take, ranging from the most official and secure to third-party options.
Revisiting macOS High Sierra 10.13.1 – A Look Back at That Classic .dmg Installer Move the completed DMG file from your temporary
Are you planning to install this on a or inside a virtual machine ?
With your bootable USB created, installing the operating system is straightforward. the target Mac completely. Insert the bootable USB drive into an available port.
Terminal will ask for your administrator password. As you type, it will not appear on the screen; this is normal. Then, type y to confirm you want to erase the drive and create the installer.