<i>&gt; The only way you can run Lion nowadays is if you find a working machine that has Lion installed on it.</i><p>No. If you’ve previously purchased OS X Lion, you can still download it via the App Store, but it won’t be included in your list of purchased items by default.<p>To fix this, choose the “View My Account” command from the “Store” menu, and click the “Manage” link next to the “Hidden Purchases” field. You’ll now be able to unhide each hidden item by clicking the appropriate “Unhide” button.