

Rm /Volumes/OS\ X\ Base\ System/System/Installation/PackagesĬp -R /Volumes/highsierra/Packages /Volumes/OS\ X\ Base\ System/System/Installation Hdiutil attach /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/InstallESD.dmg -noverify -mountpoint /Volumes/highsierraĪsr restore -source /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase
#Macos high sierra usb install size iso
I tried following all the steps listed above by as below to create an ISO of High Sierra:

Running this in an existing vmware install of macOS High Sierra Mac:~ username$ cp -R /Volumes/highsierra/Packages /Volumes/OS\ X\ Base\ System/System/Installation cp: /Volumes/OS X Base System/System/Installation/Packages: File exists cp: /Volumes/highsierra/Packages: unable to copy extended attributes to /Volumes/OS X Base System/System/Installation/Packages: No such file or directory cp: /Volumes/OS X Base System/System/Installation/Packages/Core.pkg: No such file or directory cp: /Volumes/OS X Base System/System/Installation/Packages/EmbeddedOSFirmware.pkg: No such file or directory cp: /Volumes/OS X Base System/System/Installation/Packages/FirmwareUpdate.pkg: No such file or directory cp: /Volumes/OS X Base System/System/Installation/Packages/OSInstall.mpkg: No such file or directory I even re-downloaded the installation file just in case. When I run the script (edited for the final release) it fails on line 6. PS - PowerISO said no conversion was necessary when I attempted to use it to convert the DMG to ISO, and the file sizes were identical. Hdiutil convert ~/Desktop/InstallSystem.dmg -format UDTO -o ~/Desktop/HighSierra.iso Sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/install_build Hdiutil create -o /tmp/HighSierra.cdr -size 5130m -layout SPUD -fs HFS+J Looks like the APFS issue you mentioned is something in VirtualBox, not something wrong with the image itself. Took a looooooong time to transfer files from the DVD, but it worked 100%. Wifi was disabled before beginning the install. I can confirm the following commands gave me an ISO image that successfully installed High Sierra 10.13 final downloaded from the app store to an Actual, Real Airbook via USB DVD drive, using the APFS container with zero issues.

Hdiutil convert /tmp/ -format UDTO -o /tmp/HighSierra.iso Hdiutil attach /tmp/ -noverify -mountpoint /Volumes/install_buildĬp /tmp/BaseSystem.dmg /Volumes/OS \ X \ Base \ System Hdiutil create -o /tmp/HighSierra.cdr -size 8965m -layout SPUD -fs HFS+J # Restore the 10.13 Installer's BaseSystem.dmg into file system and place custom BaseSystem.dmg into the root Hdiutil detach /Volumes/OS \ X \ Base \ System/ Hdiutil attach /tmp/ -noverify -mountpoint /Volumes/install_buildĪsr restore -source /Applications/Install \ macOS \ 10.13 \ Beta.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -eraseĬp -R /Volumes/highsierra/Packages /Volumes/OS \ X \ Base \ System/System/Installation Hdiutil create -o /tmp/HighSierraBase.cdr -size 7316m -layout SPUD -fs HFS+J Hdiutil attach /Applications/Install \ macOS \ 10.13 \ Beta.app/Contents/SharedSupport/InstallESD.dmg -noverify -mountpoint /Volumes/highsierra # Generate a BaseSystem.dmg with 10.13 Install Packages
