Next, let's open up a Terminal window and extract the package to a folder on our desktop. To start, grab the InstallMacOSX/InstallOS.dmg and mount it: The following requirements have to be met in order to use the DMG above: Mac OS X 10.8 Mountain Lion, Mac OS X 10.7 Lion and 10.6 Snow Leopard, 64 or 32bit 64. This means we'll need to manually extract the installer. Your SMBIOS is too new to run that version natively (even if you're trying to make a USB for a different computer, it still checks). pkg inside.ĭepending on what OS you're on, you can install this package, which will provide you with a 'Install (macOS version).app' and head to Setting up the installer however if you receive this error: How to get old versions of macOS (opens new window) (for 10.10 - 10.12 installers)ĭownload your desired version and a. Mac OSX Mountain Lion v10.8.3 DMG Download Click on below button to start Mac OSX Mountain Lion v10.8.3 DMG Download.Mac OS X Mountain Lion Installer (opens new window).Mac OS X Lion Installer (opens new window).To start, go to one of the following links: 3) Select the drive and continue (All contents on it will be erased) That’s it one external bootable Recovery Drive this works on both OSX 10.7 and 10.

See Legacy macOS: Online Method for this version. 1) Download OSX Recovery Disk Assistant and uncompress and launch it 2) Attach the USB drive that you want to copy the Recovery Partition to. Mavericks (10.9) is not available with this method. Getting started with ACPI (opens new window).

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