12/8/2023 0 Comments Mac os sierraisoIf this fails when the system reboots, you are effectively hosed, whereas at Of the installer thinks is already copied to disk.Ĭp "/Volumes/Install macOS High Sierra/Install macOS High Sierra.app/Contents/SharedSupport/InstallESDDmg.pkg" "/Volumes/Macintosh HD/macOS Install Data/"įinally, while you still have a functional version of the system booted, you should run aĭisk check. Here we must supply the installation package that this version This time, don't run the installer but rather a start a Terminal from the Utilities menuĪt the top of the screen. When the installer reboots, you must start from the CD again, but There is a a caveat when using this CD: You must boot from the CD first, then run through Now the installation CD is ready, and can be burnt to a physical CD. Mv /tmp/HighSierra.cdr /tmp/HighSierra.iso Hdiutil resize -size min /tmp/HighSierra.sparseimageĬaffeinate hdiutil convert /tmp/HighSierra.sparseimage -format UDTO -o /tmp/HighSierra ISO format file that can be written to a physical disk. Shrink the image to the minimum size possible, and convert it into an Hdiutil detach "/Volumes/Install macOS High Sierra" Unmount theįilesystem within so that we can start to work on the image file itself. ![]() We are done with putting files into the installer image. SetFile -a C "/Volumes/OS X Base System/"ĭiskutil rename "OS X Base System" "Install macOS High Sierra" ![]() 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/"Ĭp "/Applications/Install macOS High Sierra.app/Contents/Resources/InstallAssistant.icns" "/Volumes/OS X Base System/.VolumeIcon.icns" 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 This will change the name of the volume from Untitled to OS X Base System, Now create a bootable image from the mini-system that is embedded in the installer.Ĭaffeinate asr restore -source "/Applications/Install macOS High Sierra.app/Contents/SharedSupport/BaseSystem.dmg" -target /Volumes/Untitled -noprompt -noverify -erase 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 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 You should move the entire top directory instead ofĬopying the files underneath it, because there are locked files which you ordinary user cannot access. The files back into the required subdirectory. ![]() Within the installer directory, to be copied from there. To create a bootable installer, these files must be available from The bulk of the downloaded files is put directly in an auxiliary directory in the root of the volume ![]() 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 you must run the program, accept the license and pick a target volume. 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" Instructions here require that you use the Terminal to enter commands. ThisĪrticle will show how to do this with the High Sierra version of macOS. However, you may find that CDsĪre easier to store as backups, and thus want to create an old-fashioned CD installer. Creating a macOS High Sierra Installation ISO Image Creating a macOS High Sierra Installation ISO Imageįor the last couple of macOS versions, it has been standard to upgrade the system from aĭownloaded package, or to create an installation USB drive.
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