If you have the “Install macOS High Sierra.app” in /Applications, follow these steps to create a bootable DMG image suitable for burning or distribution on trusted machines.
Click the link for . This action automatically triggers and opens the Mac App Store. Click the Get or Download button.
Type the following command and press Enter: softwareupdate --fetch-full-installer --full-installer-version 10.13.6
hdiutil convert /tmp/HighSierra.dmg -format UDRW -o ~/Desktop/macOS_High_Sierra_10.13.6.dmg Use code with caution. download macos high sierra 10136 dmg mac top
Confirm the download to save "Install macOS High Sierra.app" to your Applications folder. Alternative Method: Using the Terminal
Open and execute the following commands sequentially to create a blank disk image, mount it, write the installer data, and convert it:
Create a blank disk image by running: hdiutil create -o /tmp/HighSierra -size 5600m -volname HighSierraInstaller -layout SPUD -fs HFS+J If you have the “Install macOS High Sierra
Step 4: Installing macOS High Sierra 10.13.6 on a Target Mac
Use the terminal command createinstallmedia to make a bootable drive:
The safest way to get the DMG is directly from Apple. Follow these steps: Click the Get or Download button
If you have an older Mac, the App Store will download the full Install macOS High Sierra.app (approx 5.2 GB) directly to your Applications folder.
Important: Combo updates are not full installers; they update an existing High Sierra installation to 10.13.6 rather than installing from scratch.
It is the last macOS version to support many older 32-bit applications before Mojave began the transition away. Official Requirements for High Sierra
: At least 2GB of RAM (8GB recommended for modern web browsing). Storage : Roughly 14.3GB of available space for the upgrade.