Dec 17, 2017 Question: Q: Uninstall High Sierra. I have a 2009-2010 powerbook. Foolishly installed High Sierra. Need to go back to Sierra, no $ for software updates. Trying to use reinstall Mac OS. Tried different key options on start up, but only getting option to install High Sierra. How can I go back, as of now I have no OS. Presenting Apple Music on Mac. The new Apple Music app is the ultimate music streaming experience on Mac. 1 Explore a library of 60 million songs, discover new artists and tracks, find the perfect playlist, download and listen offline, or enjoy all the music you’ve collected over the years. And find it all in your music library on all your devices.
DoYourData AppUninser – Best Uninstaller for macOS Sierra
After you buy a new Mac that has installed macOS Sierra, you feel happy and download hundreds of applications into the new Mac. As time passed, some of the software applications become useless and you may want to reclaim your precious SSD disk space. But if you only delete the application or move it to trash bin, some associated files are left in your Mac. It means you can’t completely uninstall the useless application. You need special macOS Sierra uninstaller to help you. For example, DoYourData AppUninser, the best macOS Sierra App uninstaller can help you easily and completely uninstall applications on your Mac.
It is very easy to download applications and install them on your macOS Sierra Mac. But it is complex to remove all parts of the installed application from your Mac under macOS Sierra. DoYourData AppUninser makes the complete uninstalling become easy. When you uninstall an application with DoYourData AppUninser, it will quickly scan the Mac find all parts of the application and related files, then it will list the items for you, you can completely uninstall the application from your Mac by 1click.
DoYourData AppUninser is fully compatible with the macOS Sierra, and it also supports other Mac OS version. When you are going to uninstall software applications under macOS Sierra, it is your best choice. Some good features of DoYourData AppUninser:
- Completely uninstall Mac applications and remove associated files such as app junk, registry, logs, etc.
- It also supports to completely remove widgets, Preferences, plug-ins, etc.
- It even can uninstall virus-infected, crashed, stubborn applications under macOS Sierra.
- It supports to quickly uninstall single application.
- It supports to easily uninstall a lot of applications in batches.Uninstall the Mac App store applications as well as uninstall applications you download from other websites.
Easy Steps to Completely Uninstall Applications under macOS Sierra
The best macOS Sierra App uninstaller should be very simple to use. DoYourData AppUninser is very easy to use. You can easily uninstall software apps under macOS Sierra with DoYourData AppUninser. Here are the simple steps.
Step 1: Select the applications you want to uninstall.
Step 2:DoYourData AppUninser will list all the applications you have selected, just make sure you want to completely uninstall the selected applications and remove all the associated files. Then click 'Uninstall'.
Step 3: After you click on 'Uninstall' button, DoYourData AppUninser will quickly and completely uninstall the selected applications and clean up the leftover. You will see the how much disk space you have reclaimed.
It is easy, isn’t it? DoYourData AppUninser will remove your worries and help you reclaim GBs of disk space by completely removing useless applications on your macOS Sierra Mac computer. Just download and try it now.
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Just like most of us, you’ve probably jumped on the Sierra bandwagon and upgraded expecting cool features and a boost in performance. But the new macOS has it’s bugs and troubles: some apps and hardware pieces are incompatible with it just yet, and some features are off-putting rather than appealing.
In any case, you don’t have to endure Sierra if for whatever reason you don’t feel like it at this point. Follow our guide on how to downgrade macOS Sierra and familiar OS X and wait for another update (or don’t).
How to remove macOS Sierra and go back to OS X 10.11
IMPORTANT: Do not proceed before you have this guide opened on some other device or printed out! If you want to reinstall El Capitan to the very Mac you’re reading this on right now, please make sure to have this page opened anywhere else or even print out the instructions. We’ve prepared a full tutorial on how to remove macOS Sierra from your Mac and revert back to El Capitan OS.
Step 1: Keep your files backed up
First, let’s figure out how to reinstall macOS without losing data. While you downgrade your Mac, it will be cleansed from the files you’ve worked on since you’ve installed Sierra. If you still need them, you should back them up.
To begin with, make sure you’re backing up the files you actually need, not some old trashy stuff that you’d be better off without. You can make use of a Mac cleaner to get rid of the files you no longer need. An app like CleanMyMac X is a good fit for the job. After you download and install it, look in the left-hand menu for the Large & Old files tab. Run the scan to find stuff on your Mac you might want to get rid of quickly. Now you can move the rest of them to an external drive or cloud storage, like DropBox or iCloud.
Also, it’s vital to have a Time Machine backup for all your files before you proceed. This is a general Mac backup and you can restore all your files by the end of the reinstallation process. You can find it in Settings -> Time Machine.
Step 2: Make an OS X El Capitan installer into a bootable drive
Before you proceed directly to macOS downgrade, you’ll need OS X El Capitan installer ready for launch. For this purpose you’ll need a bootable flash drive (USB) with El Capitan on it. When you create it, you can then erase the operation system you’ve got now (Sierra) and install El Capitan, but it must be specifically a bootable installer on drive, not just an file on the USB stick. Otherwise you won’t be able to choose it for installation. No worries, it’s not too hard to create, just stick to the steps below:
- Find an external drive (a thumb drive will do) with at least 8GB of storage space.
- Download El Capitan installer file (Install El Capitan.app) from the App Store and put it into the Applications folder.
- Open Terminal and paste this into Terminal window: sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install OS X El Capitan.app --nointeraction
- Enter admin password when asked.
Wait for about half an hour till it’s ready. In the end, you will see: Copy Complete. And finally, Done. This means you’re all set.
Step 3: Erase macOS Sierra out of your sight
Once your bootable installer is ready to roll, time to delete macOS Sierra. The following list shows you the easiest way to completely remove macOS Sierra from your Mac, so there is no coming back after you’ve gone all the way. Make sure you’ve kept all precautions, like you have the rest of this page on a separate device and your files are safely backed up or moved to the cloud storage.
Sure, you’re ready to move on? Then go.
Install Mac Os Sierra App
- Make sure you’ve got internet connection.
- Restart Mac (Apple icon -> Restart).
- Press and hold Command+R right after the startup until Mac makes that specific reboot noise.
- Open Disk Utility, you can see it in the Utilities selector.
- Click Continue.
- You can see the list of disks, find your Startup Disk among them and choose it.
- Find the Erase tab in the top. Name the file you want erased (for instance macOS Sierra).
- Choose Mac OS Extended (Journaled) from the list.
- Hit Erase.
Mac Os Sierra Uninstall Software Windows 10
When the process of erasing Sierra is complete, you can open the main menu in the upper left corner and simply quit Disk Utility. You won’t need it anymore. Quitting will bring you back to the OS X Utilities selector and our reinstallation journey continues from there.
Step 4: Install OS X El Capitan back on your Mac
Finally, after you’ve erased something, you have to install something back. With the bootable drive it’s more than easy, just a couple of clicks. However, not as fast.
- First, in your OS X Utilities selector, find and choose Reinstall OS X.
- When you see El Capitan installation, just click continue and then click through the license agreement.
- From then, follow the usual installation flow. Let it finish and let it reboot.
IMPORTANT: there is a possibility, that you’ll be able to download an earlier version of OS X, probably the one that was on your Mac when you bought it. In this case, finish the installation and then go to the Mac App Store to upgrade to El Capitan.
Step 5: Retrieve your files from El Capitan backup
As we mentioned before, a Time Machine backup is not exactly an option, it’s more of a necessity when it comes to getting your files back. Here’s how to do it:
- Restart Mac.
- Press and keep Command+R through the whole reboot.
- In the OS X Utilities selector, select Restore from Time Machine Backup.
- Press Continue (twice).
- Select the Backup source (time to recall where your backup is stored).
- Continue.
- Select OS X El Capitan backup on the drive (the most recent one).
- Continue.
Your data will be restored and then your Mac will reboot. It might take a while, so be prepared to wait. Average restoring time mainly depends on the size of your backup.