Advantages: doesn't require any advance preparation as above, you can boot from this and recover from Time Machine and/or reinstall Lion (if you have enough time). Use Lion Internet Recovery (per BJ Homer's answer).Disadvantages: you must create this before removing the old HD, it requires an 1GB or larger flash drive, and since it won't include the full Lion installer you'll need an internet connection (and 4GB worth of patience) to reinstall Lion with it. Advantages: you can boot from this and recover from Time Machine (and/or reinstall Lion if you have an internet connection and enough time). Create a Lion Recovery drive (per my answer above) using an existing Lion system and Apple's Lion Recovery Disk Assistant.Disadvantages: you need to download the installer first (around 4GB), and it requires an 8GB or larger flash drive. Advantages: just like the purchased installer, you can boot from this and reinstall Lion and/or recover from Time Machine without needing an internet connection. Create your own Lion installer drive (per Diago's answer) using a downloaded Lion installer app.Advantages: you can boot from this and reinstall Lion and/or recover from Time Machine without needing an internet connection. The current version of the Mac operating system is macOS Catalina.
CLONING OS X LION MAC OS X
Product Information Overview If you need to purchase Mac OS X 10.7 Lion, you may order it from this page. Buy a Lion installer (USB drive) from Apple. OS X Lion (10.7) A30.99 1-3 business days via email Pick-up: Apple Store Pickup is currently unavailable Add to Bag Get help buying.There are a number of similar options that can be a little confusing, so here's an attempt at clarifying their differences: Then, after you replace the HD, you can boot from that and use it to reinstall Lion and/or recover your system from Time Machine. I'll add yet another option to the list: before you remove the old HD, use the Lion Recovery Disk Assistant to copy its recovery partition to a flash drive.
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