Download OS X Mavericks from Mac App Store.

But be careful while doing so as updates like these can change file structures and libraries used in apps.

You need to create a clean install of OS X Mavericks and then move your files back to the computer.

But this is likely to take a little longer.

Note: Without backup you can still downgrade but you need a USB drive and you can manually back up all your data.

Once you have finished the backup, follow the on-screen prompts to complete the installation and restore from backup.

Click on Time Machine disk then choose the backup you want to restore.

On the next screen choose Restore from a Time Machine Backup and click Continue.

When Mac is restarting press the Command and R keys together until the screen turns grey.

Click on the Apple in the upper left and choose Restart.

With the Time machine drive plugged in or available on the network perform the following:.

Also copy and save all your files from OS X Yosemite as you cannot restore a Yosemite Time Machine backup once you switch back to Mavericks.

You need to install a Time Machine Backup of your Mac on OS X Mavericks

Downgrading to OS X Mavericks is an easy method.

How to downgrade OS X Yosemite to Mavericks IBTimes UK will not be responsible for any damage during the downgrade process. But make sure that you have backed up all your data before following the downgrade process. The following tutorial explains an easy method to downgrade from OS X Yosemite to the Mavericks version. If you are a fan of the older OS X 10.9 Mavericks over the latest OS X Yosemite version and wish to revert to the previous version from the latest OS X 10.10 Yosemite, you can do that via the downgrade process.

Windows 10 vs mac os x yosemite