Created
December 25, 2018 14:30
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MAC OS X High Sierra ISO Creation
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| #!/bin/bash | |
| hdiutil info | grep /dev/disk | grep partition | cut -f 1 | xargs hdiutil detach | |
| hdiutil attach /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/InstallESD.dmg -noverify -nobrowse -mountpoint /Volumes/HighSierra | |
| hdiutil create -o /tmp/HighSierra -size 8g -layout SPUD -fs HFS+J -type SPARSE | |
| hdiutil attach /tmp/HighSierra.sparseimage -noverify -nobrowse -mountpoint /Volumes/install_build | |
| asr restore -source /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase | |
| ditto -V /Volumes/HighSierra/Packages /Volumes/OS\ X\ Base\ System/System/Installation/ | |
| ditto -V /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/BaseSystem.chunklist /Volumes/OS\ X\ Base\ System/BaseSystem.chunklist | |
| ditto -V /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/BaseSystem.dmg /Volumes/OS\ X\ Base\ System/BaseSystem.dmg | |
| hdiutil detach /Volumes/HighSierra | |
| hdiutil detach /Volumes/OS\ X\ Base\ System/ | |
| hdiutil resize -size `hdiutil resize -limits /tmp/HighSierra.sparseimage | tail -n 1 | awk '{ print $1 }'`b /tmp/HighSierra.sparseimage | |
| hdiutil convert /tmp/HighSierra.sparseimage -format UDTO -o /tmp/HighSierra | |
| rm /tmp/HighSierra.sparseimage | |
| hdiutil convert /tmp/HighSierra.cdr -format UDTO -o ~/Desktop/HighSierra.iso | |
| mv ~/Desktop/HighSierra.iso.cdr ~/Desktop/HighSierra.iso |
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Link to download macOS High Sierra from the Mac App Store https://support.apple.com/macos/high-sierra