![how to make a bootable usb mac os sierra how to make a bootable usb mac os sierra](https://techbland.com/wp-content/uploads/2019/09/Screenshot_1-1.png)
- #How to make a bootable usb mac os sierra update#
- #How to make a bootable usb mac os sierra windows 10#
My previous installation issue was not relevant, as I was installing the High Sierra update while in a Mountan Lion VM. Update: This worked for me, too (after modifying the last "mv" command). Hdiutil convert ~/Desktop/InstallSystem.dmg -format UDTO -o ~/Desktop/HighSierra.iso
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Hdiutil detach /Volumes/Install\ macOS\ High\ Sierra Sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/install_build Hdiutil attach /tmp/ -noverify -mountpoint /Volumes/install_build Hdiutil create -o /tmp/HighSierra.cdr -size 5130m -layout SPUD -fs HFS+J
#How to make a bootable usb mac os sierra windows 10#
It Works for me on Windows 10 Workstation 12.5.7 # Generate a BaseSystem.dmg with High Sierra Beta Installer Packageshdiutil attach /Applications/Install\ macOS\ High\ Sierra\ Beta.app/Contents/SharedSupport/InstallESD.dmg -noverify -mountpoint /Volumes/highsierrahdiutil create -o /tmp/HighSierraBase.cdr -size 7316m -layout SPUD -fs HFS+Jhdiutil attach /tmp/ -noverify -mountpoint /Volumes/install_buildasr restore -source /Applications/Install\ macOS\ High\ Sierra\ Beta.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erasecp -R /Volumes/highsierra/Packages /Volumes/OS\ X\ Base\ System/System/Installationhdiutil detach /Volumes/OS\ X\ Base\ System/hdiutil detach /Volumes/highsierra/mv /tmp/ /tmp/BaseSystem.dmg# Restore the High Sierra Beta Installer's BaseSystem.dmg into file system and place custom BaseSystem.dmg into the roothdiutil create -o /tmp/HighSierra.cdr -size 8965m -layout SPUD -fs HFS+Jhdiutil attach /tmp/ -noverify -mountpoint /Volumes/install_buildasr restore -source /Applications/Install\ macOS\ High\ Sierra\ Beta.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erasecp /tmp/BaseSystem.dmg /Volumes/OS\ X\ Base\ Systemrm /tmp/BaseSystem.dmghdiutil detach /Volumes/OS\ X\ Base\ System/hdiutil convert /tmp/ -format UDTO -o /tmp/HighSierra.isomv /tmp/ ~/Desktop/HighSierraPublicBeta.isorm /tmp/ I found this script from agentsim who is GitHubGist user.