sudo rm -rf '/Volumes/OS X Base System/Install macOS High Sierra.app'Ĭaffeinate sudo cp -a '/Applications/Install macOS High Sierra.app' '/Volumes/OS X Base System/' To reflect the setting in the source image.Ĭopying must be done as the superuser since it contains locked files that the normal user does not have access to. This will change the name of the volume from Untitled to OS X Base System,

caffeinate asr restore -source '/Applications/Install macOS High Sierra.app/Contents/SharedSupport/BaseSystem.dmg' -target /Volumes/Untitled -noprompt -noverify -erase Now create a bootable image from the mini-system that is embedded in the installer. Hdiutil attach /tmp/HighSierra.sparseimage -noverify -nobrowse -mountpoint /Volumes/Untitled hdiutil create -o /tmp/HighSierra -size 12800m -layout SPUD -fs HFS+J -type SPARSE Please make sure that you don't have any other disks named Untitled currently in use. mv '/macOS Install Data' '/Applications/Install macOS High Sierra.app/Contents/SharedSupport'Ĭreate an image file with sufficient space to hold the DVD, in a format that is writable and growable, and mount it.

You should move the entire top directory instead ofĬopying the files underneath it, because there are locked files which you ordinary user cannot access. This is best done by moving the files back into the required subdirectory. To create a bootable installer, these files must be available from within the installer directory, to be copied from there. The bulk of the downloaded files is put directly in an auxiliary directory in the root of the volume you selected in the installer. Rather select Quit from the application menu at the top of the screen. When you get to the final screen, do NOT click the Reset button, but Then it will start downloading the full version. If you got the stub, then you must run the program, accept the license and pick a target volume.

It can appear random which systems that receive the full installation package and which only get the stub. On some systems, only a small stub of about 19MB is downloaded. This will create a directory called 'Install macOS High Sierra' under Applications. First, you must download the High Sierra package from the Mac App Store.

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