download the last version for apple O&O DiskImage Professional 18.4.304

The installer for Monterey was more than 12GB, while for the Big Sur beta was also about 12GB, but Big Sur needed even more space to install itself –in some cases, people couldn’t update unless they had around 40GB free! Read: Don’t bother trying to update to Big Sur if you have a 128GB Mac. There’s a good reason why you need the space. We generally recommend that you always have 10% of the total space of your Mac free at all times as this does tend to avoid issues.

Read: How to install macOS on an old unsupported Mac.Īpple suggests that you should have 20GB of free space on your Mac’s drive before you install a new version of macOS – although you may not need that much. If your Mac’s not supported that doesn’t mean you can’t run that version of macOS – doing so is just a little more complicated (and risky). Don’t update your Mac only to then discover your version of Photoshop doesn’t work anymore! Read: Which Apps don’t work and Which Apps work on an M1 Mac. While you won’t be able to install a version of macOS that isn’t supported by your Mac (it won’t show up in Software Update or the Mac App Store) there are situations where the version of macOS will be available to you, but your Mac won’t be able to enjoy all the new features on offer, or even worse, installing the update will mean you lose access to Mac features you rely on currently.Īnother thing to check for is software compatibility. To find out if your Mac is supported read: Sonoma compatibility list.

Related to the above, you should check that your Mac will actually run the version of macOS you want to install – and that you will actually be able to take advantage of the new features that appeal to you most.

Download the last version for apple O&O DiskImage Professional 18.4.304