MacOS X Lion is the new version of Apple’s operating system. It succeeds Snow Leopard and can only be installed from the Mac App Store for about EUR 23, a very attractive price. A USB flash drive version will still be available in August.
Before installing MacOS X Lion
It is strongly advised to update your system via the menu Apple then Software Update... Apple recommends using Snow Leopard to dispose of the Mac App Store although this is not necessarily an obligation.
Once all the updates have been made, go to the Mac App Store and then click on the lion to proceed with the download. The archive weighs about 4 GB.
Note that you will not be asked for serial keys when installing MacOS X — this always surprises a Windows user. If you want to install MacOS X Lion on a USB stick, follow our handy tutorial.
Detailed installation procedure
Once MacOS X Lion is downloaded, a first home screen will appear.
Just click on the button Continue.
We now need to define the partition to be updated. In principle, it automatically selects itself.
Do so. Install to start the process. The assistant then asks you to wait a few minutes.
Your computer will automatically restart after a few minutes. The installation can then really start. Count between 30 minutes and 1h30 of installation, it depends directly on your machine.
More than 250 new features are available in Lion including a new user interface, Launchpad for iOS-style app launch, Mission Control for enhanced virtual desktop management, Mail/iCal/Address Book update, and much more. MacOS X 10.7 is probably the biggest version in the last ten years, so make your Mac roar!