Here are some ideas to free up space on your drive: Next, you will need enough disk space available, for example, to create Recovery Partition. Note, that it is recommended that you install OS on a clean drive. The chart below tells you how much free space is needed.
One more argument is that the free space on your disk translates into virtual memory so your apps have “fuel” to operate on. This includes not just space for the OS itself but also space for other applications and your user data. Given your Mac isn’t new and is filled with data, you will probably need enough free space on your Mac. We’ll be repeatedly referring to these Apple OS versions below, so it’s good to know the basic macOS timeline. Further down we’ll explain where to get one and what problems you may face down the road. Finally, if you want to run a parallel copy of Mac OS X on a virtual machine, you too will need a working installation file of an older Mac OS X. Also, you may have noticed your Mac’s performance went down right after the last update. To begin with, some of your apps may not be working properly (or simply crash) on newer operating systems. There are many reasons that could point you to this radical decision.
So, you’ve decided to download an older version of Mac OS X.
#Télécharger mac os x lion iso how to
This guide will teach you how to create a bootable USB Flash drive of Mac OS X Lion 10.7 and install Lion from USB, rather than downloading it from Mac App Store on each and every Mac computer you own. The Mac OS X 10.7 Lion is available for installation only from the Mac App Store. Apple Mac OS X Lion is now available to general public. For earlier versions of Mac OS X, including Mac OS X Mavericks 10.9, Mac OS X Mountain Lion 10.8, Mac OS X Lion 10.7, Mac OS X Snow Leopard 10.6, Mac OS X Leopard 10.5, Mac OS X Tiger 10.4, and before, the process to obtain those installers differs a bit.