Scan down the list of apps you’ve purchased or download for free (which is in order of when you downloaded them) and find the old version of macOS. Make sure you’re logged into the Mac App Store with the Apple ID you used to update to Sierra (or whichever version you want to clean install), then click Purchased in the menu bar along the top. If you’re using Sierra or earlier, we can use the same method as above, but it’s a bit harder to get the install file: Apple doesn’t offer downloads of outdated OS versions through the normal store front, and searching for ‘Sierra’ won’t find what you’re looking for. Once installation of High Sierra is complete, you can restoring apps and settings from a Time Machine backup, or download them again manually. Go back to the main menu and choose Install OS X. OS: PCs with Windows 8.1, Windows 10 and Windows 11, iPhones, iPads and iPods running iOS 10 or higher, Android Phones and tablets running Version 6 or higher.

Select ‘Disk Utility’ and your hard drive, then click Erase. Choose to install macOS High Sierra from the drive. We particularly like its Slimming System feature, which scans for and removes surplus files left behind by Windows, such as old updates this can help you reclaim several gigabytes of space. With the boot drive connected, start up – or restart – your Mac while holding down the Wise Disk Cleaner offers a reliable alternative to Ccleaner for deleting junk files from your PC.

Wise disk cleaner 10.7 1