![]() ![]() ![]() DiskMaker X Pro is a perfect tool for Apple technicians performing on-site repairs, allowing to restore any OS in a few clicks. And each OS will only take the space needed on the drive, keeping all the remaining space of the disk in an Other_Stuff partition so that you can keep other tools as well. Follow the instructions, copy your installers in the right folder, and within a few minutes, you’ll get a disk with every macOS / OS X installer released in the past seven years, each one being bootable. Provide the installers, name your disk DMX-Target and launch DiskMaker X Pro. But was happens if you want to build a disk with different versions of the macOS Install app ? Using DiskMaker X, you would need to prepare your drive with multiple partitions, create an install disk on one partition, and then rince, repeat with every version of the macOS or OS X Install app.ĭiskMaker X Pro is DiskMaker X, on steroids. With the OS X USB Installer disk ready follow Carstens's advice and hold down option after reboot and boot up from the installer and unfettered from the installed OS X on your internal disk install the OS X version on the external disk of your choice.DiskMaker X was designed to create a single drive from a macOS install application. Wait for the installation to complete, This can take a very long time, like an hour or so, depending on the speed of the disks involved and other factors. In both cases you of course need to supply your administrator password as usual. Alternatively, if Yosemite issue this updated command instead: sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia -volume /Volumes/ -applicationpath /Applications/Install\ OS\ X\ Yosemite.app -nointeraction If there are spaces in the name use "quotation" marks around the whole path: "/Volumes/". Replacing with the name of the disk you want to reformat into an installation disk. Open up Terminal and if Mavericks, then issue this command on a single line: sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia -volume /Volumes/ -applicationpath /Applications/Install\ OS\ X\ Mavericks.app -nointeraction Start the Mavericks/Yosemite installer that you previously downloaded and stop at the first screen with the big X symbol and continue button.After copying, reboot holding the option key, select the install medium you just created and happily install Lion to a destination of your choice.Īn 8GB medium will be fine for the installer (it's 4.7GB), and a 32GB partition for the installed system (this will leave you with more than 7GB of free space).Ĭarsten Shultz' answer is still generally correct, but there's also the easier option to use a tool like Diskmaker X or since Mavericks use the built-in ability to make a bootable disk with a Terminal command.įor the latter with the Mavericks or Yosemite installer.In Disk Utility use "Restore" to copy the Installer to the boot medium: As destination use the newly created partition, for the source use the Finder to show the package contents (right click) of "Install Mac OS X Lion", there locate InstallESD.dmg and drag it to the source field. ![]() Take for example USB drive or SD card, partition it in Disk Utility, make one partition and make sure to select GUID partition scheme so that the medium will be bootable.Quick instructions (more detailed ones can easily be found on the net, but I have not read any thoroughly enough to be able to endorse them): The (or at least a) solution is embarrassingly simple: Do not start the installer from a running system, but make a bootable install medium from the disk image included in the install program package and use that. ![]()
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