#MAC OS HIGH SIERRA DMG UPGRADE#
#MAC OS HIGH SIERRA DMG SOFTWARE#

Note that, after doing this, the name of our destination mount point has changed to вЂњOS X Base System/System.вЂќВ YouвЂ™re almost done! Unmount the image: hdiutil detach /Volumes/OS X Base SystemДЄnd, finally, convert the image you created into an ISO file: hdiutil convert /tmp/ -format UDTO -o /tmp/HighSierra.iso Now youвЂ™re going toВ restore BaseSystem.dmg from the installer over to the newly mounted image: asr restore -source /Applications/Install macOS High Sierra.app/Contents/SharedSupport/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase Next, mount your blank image: hdiutil attach /tmp/ -noverify -nobrowse -mountpoint /Volumes/install_build To convert those files to an ISO, weвЂ™ll need to use the Terminal, which you can find in Applications > Utilities.ДЇirst, run the following command to create a blank disk image: hdiutil create -o /tmp/HighSierra.cdr -size 7316m -layout SPUD -fs HFSJ

#MAC OS HIGH SIERRA DMG UPGRADE#

We donвЂ™t want to upgrade your friendвЂ™s Mac we just need the downloaded files. When the process is done, the installer will launch-thatвЂ™s okay, just close it with CommandQ. To start, weвЂ™ll need to create an ISO file of macOS High SierraвЂ™s installer, so we can load it in VirtualBox on our Windows machine.В Grab your borrowed Mac, head to the Mac App Store, search for Sierra, and click вЂњDownload.вЂќ Ready to get started? LetвЂ™s jump in! Step One: Create a macOS High Sierra ISO File Borrow a friendвЂ™s Mac for an hour if you donвЂ™t have one, and you should be fine-everything beyond step one of this tutorialВ can be done on your Windows PC.

You could, we suppose, obtain a High Sierra ISO by other means, but we donвЂ™t recommend it. NOTE: In order to get this working, you will need access to a real Mac in order to download High Sierra. To make things a little easier for people, weвЂ™ve combined methods from a few different forum threads into a single, step-by-step tutorial, complete with screenshots. Other than that, though, this is macOS High Sierra, running smoothly inВ VirtualBox. The only thing not working is sound, which for some reason is highly distorted or nonexistent.

Some of the folks have figured outВ a process that works. Unfortunately, youвЂ™re not really supposed to do this-so getting macOS running in VirtualBox is, to say the least, tricky.

#MAC OS HIGH SIERRA DMG SOFTWARE#

Whether you want to occasionally test a website in Safari, or try out a little bit of software in the Mac environment, having access to the latest version of macOS in a virtual machine is useful.

Mac os high sierra dmg