: Includes the final standard security patches before the OS reached end-of-life status in late 2020.
Are you trying to or just doing a clean install?
: Stability improvements for the Apple File System, which replaced the aging HFS+. Metal 2 : Refined graphics performance for apps and games. download macos high sierra 10136 dmg mac top
Your Mac will open the Software Update panel and begin downloading the installer.
Before installing, ensure the target Mac is officially compatible with version 10.13.6: Late 2009 or newer MacBook Pro: Mid 2010 or newer MacBook Air: Late 2010 or newer Mac mini: Late 2010 or newer iMac: Late 2009 or newer Mac Pro: Mid 2010 or newer : Includes the final standard security patches before
Create a blank disk image by running: hdiutil create -o /tmp/HighSierra -size 5600m -volname HighSierraInstaller -layout SPUD -fs HFS+J
The target system also requires a minimum of and at least 14.3 GB of available storage space to execute the installation smoothly. Metal 2 : Refined graphics performance for apps and games
Follow these final steps to install the OS on your target machine: Shut down the Mac you want to update. Insert the bootable USB installer into the device. Turn on the Mac while holding down the key. Release the key when the Startup Manager screen appears.
To run this DMG installer, your Mac must be one of these models (or newer):
Wait for the download to complete. The file "Install macOS High Sierra" will appear in your folder. Converting the Installer App to a DMG File
It serves as a vital bridge operating system for users who must execute older 32-bit production software before Apple deprecated support entirely.