![]() diskutil partitionDisk disk4 GPT HFS+ USBSTICK 100% Take note of the disk, in my case /dev/disk4. Should display something like something else may appear depending on your stick. Take note of the disk, for example mine is /dev/disk3s2. Should display something like: 2: Apple_HFS OS X Base System 1.3 GB disk3s2 Step 2 - Find Your Install Disk diskutil list virtual | grep "OS X Base System" Look in Volumes you should see something like OS X Base System, remember whatever it shows. If you just have an InstallESD.dmg or BaseSystem.dmg file, you should just open them. Contents/SharedSupport/InstallESD.dmgįrom here you should see something like OS X Install ESD or something like that, cd into that path. ![]() In Terminal: cd "/Applications/Install Mac OS X Lion.app" Mine is in Applications, but you can put it anywhere for this. We're going to need to start by getting to the actual installation disk image. ![]() Open Terminal, you'll need it in most of this tutorial. You'll need an 8GB USB stick and either the Install Mac OS X Lion.app or InstallESD.dmg or BaseInstall.dmg. It is possible to create a bootable USB stick without this program. Yosemite and later used a built in program called createinstallmedia to automagically make a USB stick.
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