6 Iso Download - Macos High Sierra 10.13

Apple provides a direct link to the InstallMacOSHighSierra.pkg (not ISO) → once opened, it installs the .app installer into your /Applications folder.

Go to:
https://support.apple.com/en-us/102527
Click “Get macOS High Sierra” → downloads InstallMacOSHighSierra.pkg

The following script creates a blank DMG, mounts it, writes the installation media, and converts it to an ISO. This must be run in Terminal.

Step 1: Create the Temporary Disk Image

# Create a 10GB DMG
hdiutil create -o /tmp/HighSierra -size 10g -layout SPUD -fs HFS+J -type SPARSE

Step 2: Mount the Image

hdiutil attach /tmp/HighSierra.sparseimage -mountpoint /Volumes/install_build

Step 3: Write the Installer to the Volume

# Use the createinstallmedia tool provided inside the Installer app
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/install_build

(When prompted, type y to confirm erasing the volume). macos high sierra 10.13 6 iso download

Step 4: Unmount the Volume

hdiutil detach /Volumes/Install\ macOS\ High\ Sierra

Step 5: Convert DMG to ISO

# Convert the sparse image to a final ISO/CDR file
hdiutil convert /tmp/HighSierra.sparseimage -format UDTO -o ~/Desktop/HighSierra.iso

Step 6: Rename and Cleanup

# Rename .cdr to .iso for broader compatibility
mv ~/Desktop/HighSierra.iso.cdr ~/Desktop/HighSierra.iso
For scripted environments, using the mas (Mac App Store CLI) tool is efficient.

Note on Safety: Avoid downloading pre-built ISOs from third-party "warez" or torrent sites. These images can be modified to include rootkits or malware. Always build the ISO from the source Apple application.