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#BOOTABLE DOWNLOAD FOR OS X HIGH SIER HOW TO#
#BOOTABLE DOWNLOAD FOR OS X HIGH SIER INSTALL#

$ hdiutil convert /tmp/ -format UDTO -o /tmp/high-sierra.

Convert the temp dmg file to iso file.

$ hdiutil detach /Volumes/OS\ X\ Base\ System

Detach above OS X Base System/ volume.

Now go to /Volumes directory, you can see there are two volume, the main disk volume is used for current macOS, the other is for macOS high sierra installer.$ asr restore -source /Applications/Install\ macOS\ High\ Sierra.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase Restore downloaded macOS high sierra installer to install_build volume.dev/disk3s2 Apple_HFS /Volumes/install_build hdiutil attach /tmp/ -noverify -nobrowse -mountpoint /Volumes/install_build Attache above dmg file to install_build volume.$ hdiutil create -o /tmp/high-sierra.cdr -size 7316m -layout SPUD -fs HFS+J Create a temporary dmg file which will be used to save macOS high sierra content.

#BOOTABLE DOWNLOAD FOR OS X HIGH SIER HOW TO#

If you want to see detail explain, you can read article How To Download macOS Mojave Installer And Convert To ISO File. I was able to make a macOS Sierra external USB boot disk in a few minutes, and the installation worked without a hitch. You can follow below brief steps to do it.

#BOOTABLE DOWNLOAD FOR OS X HIGH SIER INSTALL#

Now it is time to convert the above macOS high sierra installer to an iso file to install it in VirtualBox. Create ISO File From MacOS High Sierra Installer. drwxr-xr-x 11 root wheel 352 Dec 14 19:03 ContentsĢ. drwxr-xr-x 11 root wheel 352 Dec 14 19:03 Contents You can also find it in the terminal use the below command.

When the download completes, the macOS High Sierra installer file will be saved in the /Applications folder, the installer file name is Install macOS High Sierra.During the download process, you can see the remaining time of the download.Click the blue GET button to popup the download macOS High Sierra prompt dialog, it will ask you whether to download it now or later, click the Download button to start the download.And it will show the macOS High Sierra download page.

Click it will open the App Store in your current macOS ( my current os is Mojave ).

After search the sentence macOS High Sierra download in google, I finally find the macOS high sierra download link.

So I need to download the macOS High Sierra. At first, I download the newest macOS Mojave follow the article How To Download macOS Mojave Installer And Convert To ISO File, and when I have done creating the iso file, I find VirtualBox does not support macOS Mojave, the highest version that Virtualbox supports is macOS High Sierra.