# 1. Create a blank disk image hdiutil create -o /tmp/HighSierra -size 5600m -layout SPUD -fs HFS+J # 2. Mount the created image to your Mac hdiutil attach /tmp/HighSierra.dmg -noverify -mountpoint /Volumes/HighSierra # 3. Use Apple's built-in tool to flash the installer onto the image sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/HighSierra --nointeraction # 4. Unmount the newly flashed volume hdiutil detach /Volumes/Install\ macOS\ High\ Sierra # 5. Convert the temporary DMG file into an ISO image hdiutil convert /tmp/HighSierra.dmg -format UDTO -o ~/Desktop/HighSierra.cdr # 6. Rename the file extension from .cdr to .iso mv ~/Desktop/HighSierra.cdr ~/Desktop/HighSierra.iso # 7. Clean up the temporary disk image file rm /tmp/HighSierra.dmg Use code with caution.
Before starting the installation process, ensure your Mac hardware is compatible: 2 GB minimum (4 GB recommended). Storage Space: At least 14.3 GB of available storage space. Compatible Mac Models: MacBook (Late 2009 or newer) MacBook Air (Late 2010 or newer) MacBook Pro (Mid 2010 or newer) Mac mini (Mid 2010 or newer) iMac (Late 2009 or newer) Mac Pro (Mid 2010 or newer) Step 1: Create a Bootable macOS High Sierra DMG (On Mac) download macos high sierra 1013 iso and dmg upd
You now have a safe, locally created ISO file for your VM. Use Apple's built-in tool to flash the installer
For the best results and to avoid viruses: Rename the file extension from
Several third-party disk utilities, such as or EaseUS Data Recovery Wizard for Mac , offer an integrated "Download Image" or "macOS Installer" feature. These tools can download a macOS dmg file directly to your Mac or an external drive. They are particularly useful for getting a dmg file for virtualization or creating a bootable USB.
tab, and find High Sierra. You can choose to download it as a or a full application bundle. 3. Downloading ISO Files (For Virtual Machines) Apple does not officially provide macOS in