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The finalized macOS_High_Sierra_10.13.6.dmg file will appear directly on your desktop. 4. Creating a Bootable USB Installer from the DMG
Once finished, the file named Install macOS High Sierra.app will appear in your folder. Method B: Extracting the DMG from the Official Installer
Select your internal system drive (typically labeled Macintosh HD ) and click . Set the format options to: macos high sierra 10136 dmg install
Click the link for . This action automatically redirects and opens the Mac App Store. Click Get or the download cloud icon.
Your Mac will boot into the recovery environment. Formatting the Target Hard Drive Select Disk Utility from the menu and click Continue .
If you downloaded an .app file using the method above but specifically need a .dmg (Disk Image) file for a virtual machine or external deployment, you can package it yourself using the Terminal: @media (max-width: 768px)
A USB 3.0 or USB-C Flash Drive with a capacity of . Administrative privileges on the host Mac computer. Step-by-Step Terminal Method Insert your USB flash drive into the Mac.
With your bootable USB created or the package ready, choose between upgrading your system or executing a clean, fresh installation.
# Open Terminal (from Utilities menu) date 0101010118 # This sets the date to January 1, 2018. Then try running the installer again. Method B: Extracting the DMG from the Official
After entering the command, press Return. Terminal will erase the USB drive and copy the installation files. The process typically takes depending on the speed of your USB drive and Mac. Once finished, Terminal will display “Done.”.
The USB drive must be formatted as Mac OS Extended (Journaled) with a GUID Partition Table.