![]() Restore the image to as USB drive $ sudo asr -source InstallESD. ![]() Once the USB is ready, attach it to your ProBook, and turn it on. But in short, buy the OS X Lion app on a Mac, attach a USB of 8GB or more capacity, format it as Mac OS X Extended, download UniBeast from tonymacx86, run it, be sure to select Laptop Support when you run it, wait, voila. Successfully scanned image "/Users/paul/InstallESD.dmg" Explaining the whole thing will take time. Scan the image to make it ready for restore $ asr imagescan -source InstallESD.dmgĬhecksumming partition of size 0 blocks.doneĬhecksumming partition of size 4 blocks.doneīlock checksum. Find many great new & used options and get the best deals for Bootable Mac OS X Leopard USB installer (10.5. Make a copy of the installer dmg: $ cp "Install Mac OS X Lion.app/Contents/SharedSupport/InstallESD.dmg" ~ (Other answers you find are out of date, as they change every time Disk Utility’s UI changes, which is a lot.)īefore you begin, make sure to partition the USB drive as GPT and format it as Mac OS Extended (Journaled) (aka JHFS+). Here are instructions for doing this in the Terminal.
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