Data Recovery

A Full Guide to Downgrade from Yosemite to Mavericks

Catch up with the latest Mac OS X Yosemite without thinking carefully, and now have trouble with it? Some applications don't work as they used to, Finder crashes when you drag files, Contacts app quits unexpectedly, or something like these. Get tired of the disappointed features and want to downgrade from Yosemite to Mavericks to get everything back to normal? If yes, you come to the right place, this article gives you a full guide on how to do it.

Part 1. Backup Everything before Downgrading to Mavericks from Yosemite

If you installed Yosemite and create important content you'd like to keep, you'd better backup them at first. Time Machine is a good choice for you. Follow the easy steps below.

Step 1. On your Mac, go to the upper left corner and click the Apple icon. In the drop-down menu, click System Preferences….

downgrade yosemite

Step 2. It brings up System Preference window. Go to find Time Machine and click it.

downgrade yosemite to mavericks

Step 3. Connect your external hard drive on Mac with a USB cable.
Step 4. On the left column, turn on Time Machine. Then, click Select Disk…. In the pop-down menu, choose your external hard drive. Click Use Disk

downgrade to mavericks from yosemite

how to downgrade to mavericks from yosemite

Step 5. On the bottom line of the Time Machine window, tick Show Time Machine in menu bar.
Step 6. Control click the Time Machine icon. In the pop-up dialog, click Back Up Now.
Step 7. The Back process begins. Wait until the backup process completes.

downgrading to mavericks from yosemite

Part 2. Steps to Downgrade Yosemite 10.10 to Mavericks 10.9

Step 1. Download Mavericks in Mac App Store.
On your Mac, click Finder > Applications > App Store. This brings up App store window. Go to Purchases tab and sign in your Apple ID.
Then, scroll down the items you download or fill out Mavericks in the search box at the upper right corner to find Mavericks. It's a 5.33 GB file and will take hours to finish the downloading. Please wait until it's finished.

If you can’t download Mavericks on your Mac, you can change a Mac, especially one that haven’t installed Yosemite.

steps to downgrade to mavericks from yosemite

Step 2. Download DiskMaker X on your Mac
Besides Mavericks, DiskMaker X is another program you need to download. Launch this page and download DiskMaker X on your Mac. When downloading is completed, go to find the DiskMaker X. Open the DiskMaker X and drag and drop it to Applications.

how to downgrade from yosemite to mavericks

Step 3. Insert a usb thumb drive with at least 8 GB storage.
Step 4. Go to Applications and double click DiskMaker X. This brings up a dialog, asking you which version of OS X you want to boot. Choose Mavericks (10.9).

steps to downgrade from yosemite to mavericks

Step 5. Then, DiskMaker X begins to look for Mavericks automatically. Once it finds Mavericks, click Use this copy. If Mavericks can't be found, you need to browse your Mac and choose Mavericks by yourself.

downgrading from yosemite to mavericks5

Step 6. Click the button for your thumb drive, like An 8GB usb thumb drive.


downgrade from yosemite to mavericks

Step 7. Choose Install OS X Mavericks and click Choose this disk.

revert yosemite to mavericks

Step 8. Go to click Erase then create the disk.

downgrade yosemite 10.10 to mavericks 10.9

Step 9. Click Continue and fill out your Administrator name and password. Then, click OK.

how to downgrade yosemite 10.10 to mavericks 10.9

Step 10. DiskMaker X begins to copy files. Wait until it's finished.

downgrading yosemite 10.10 to mavericks 10.9

Step 11. Shut down your Mac and restart it. Then, hold on the Option key on the keyboard and choose Install OS X Mavericks.

resert Yosemite 10.10 to Mavericks 10.9

Step 12. After it's booted, you can select Disk Utility and click Continue. Then, choose your Mac Hard Drive named Macintosh SSD or other. Click Erase….

reserting Yosemite 10.10 to Mavericks 10.9

how to resert Yosemite 10.10 to Mavericks 10.9

Step 13. Go back to the main option and choose Install OS X and click Continue.

install mavericks

Step 14. In the Install OS X window, click Continue and then select your chosen hard drive Macintosh SSD or other. Click Install.

install os x mavericks

install mavericks after downgrading from yosemite

Step 15. The installation of Mavericks begins. It takes a little time. Wait until the installation finishes.

If you have made backup via Time Machine, and want to restore your Mac, please go on reading Part 3.

Part 3. Restore Data after Downgrading to Mavericks from Yosemite

Now, you have successfully reverted to Mavericks from Yosemite. If you have created backups by using Time Machine just as I mentioned above, you can restore to your Mac.

The two steps below actually carry on the steps above. I separate them to specifically tell you how to restore your Mac after reverting from Yosemite to Mavericks.

Step 1. In the Migration Assistant. Go to this section - Choose a way to transfer your information? And tick From a Mac, Time Machine backup, or startup disk. Click Continue.

restore after downgrading from yosemite to mavericks

Step 2. Choose Time Machine backup and click Continue. Then, wail until your Mac is restored.

how to restore after downgrading from yosemite to mavericks

If you didn't make backups and lose your important data, don't worry. You can draw support from some data recovery tool, like Wondershare data recovery for mac to get everything back.


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Step 3 will not work. Mavericks migration assistant complains that the backup was made using a newer version of OSX and refuses to continue
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