manI love my Mac devices. One such device I own is a MacBook Pro. I recently installed the macOS Sierra on my MacBook Pro but it looks like it’s having problems. I don’t want my files to be removed so I want to reinstall macOS Sierra without losing data. What I want is a simple reinstall of the operating system. How do I do this?

It's easy to reinstall Mac OS sierra without losing data. The following guide will answer you in detail.man2

Article GuidePart 1. Things You Need to Know before Reinstalling Mac OSPart 2. How to Reinstall macOS Sierra without Losing DataPart 3. Conclusion

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Part 1. Things You Need to Know before Reinstalling Mac OS

Is your Mac device not operating properly after a macOS Sierra installation? Or maybe, you are in the middle of the installation process and some kind of issue appeared.

One of the best methods to fix these problems is to reinstall your macOS Sierra. Don’t fret about losing a lot of data though because of reinstall Mac OS Sierra.

Reinstalling your macOS Sierra won’t do anything to your files, user settings, apps, and other data. What happens is a fresh copy of the said operating system will be installed within your Mac device again.

But what if you want to clean up all your data on Mac? What if you want to factory reset your Mac for it to go back to its original settings? Well, what you should is to do a macOS Sierra clean install.

The said type of installation process results in the removal of everything in your device. All documents and files will be removed. A reinstallation, on the other hand, will not delete the said files.

If you know that you want to keep your data (as opposed to removing all of them), you should read this guide to learn how to do a reinstallation of the macOS Sierra.

But before you do the entire process, you have to do a few things to prepare your device for the installation of macOS Sierra.

Reinstall High Sierra

Before You Begin: Back Up Your Data

Although reinstallation won’t delete your data, it’s still important to be sure of it. That’s why you have to back your data up. In case an issue appears, you can restore the backup and still have the files most important to you.

One possible method you can use for a backup is to use the Time Machine of your macOS. This Time Machine enables your device to automatically create backups.

Another way to do it is through iCloud and DropBox. You can also utilize external hard drives to back your data up. Another thing you might want to do before the reinstallation of the macOS Sierra is to clean your device of junk, including clean the application cache.

You might also want to clean it of unwanted files like browser extensions and app leftovers. This might be a good thing to do since it results in a better installation of the operating system--no clutter will be around once you have the new macOS.

So, how do you do it? Well, you can do it manually or you can do it with a tool. We recommend that you use Mac cleaner tool for the process to be completed quickly. And the software we would recommend is the iMyMac’s Mac Cleaner which can also help your Mac purgeable space be removed.

Below are the features and advantages of this cleaner:

1 - One-Click Feature - This means you can simply do a complete scan of your Mac in just one click. You can also clean your entire Mac device with a simple click.

2 - Powerful - The powerful features of iMyMac’s Mac Cleaner allows it to do a comprehensive scan of your entire Mac. Every status of your Mac can be checked including the Memory, CPU, Disk, and Battery state.

3 - Selective - It comprehensively scans your device and displays the results in a list. You can select the display method by a particular feature such as time and size, among others. You can preview each item and select the ones you want to delete if you want to. You are in control of everything.

4 - Free Trial - You are free to try the Mac Cleaner for the first 500MB of data. You will be able to experience its features without shelling out money from your pocket.

Free Download

Here’s how to use iMyMac’s Mac Cleaner to clean up your Mac:

Step 1: Download and Launch iMyMac-Cleaner from its official website.

Download the program from its official website.

Launch the software on your Mac device. The main screen will display the system status of your device.

check Mac system status

Step 2: Select and Scan System Junk

Check out the left side of the screen. Select the module named “System Junk.” Press the Scan button to start the scanning process. Wait for a moment until all junk files are displayed to you.

The Mac Cleaner will display the junk files in various categories such as Application Cache, Mail Junk, Photo Junks, System Logs, System Cache, etc.

Junk Files Scan

Step 3: Review and Select Items to Clean Up

Select a category and preview the files in that category. Select the categories and specific files (in that category) you want to clean up.
Press the button named Clean.
Confirm the cleanup process by clicking Confirm.

Clean selected files

Step 4: Clean Up is Done

Wait until the selected files are cleaned up. These files will then be marked as Zero KB. Auto-recreated folders will not be marked as such.

Repeat steps 1 to 8. But this time on step 3, select the module “Mail Trash” or “Large & Old Files.”

Clean Junk Files Completed

Now, after you have your backup and after you have removed unnecessary clutter, it’s high time to do the reinstallation.

Part 2. How to Reinstall macOS Sierra without Losing Data

Here’s a step-by-step guide on how to reinstall the macOS Sierra on your device without losing data:

  1. Select Restart from the menu.
  2. Select Reinstall macOS from Utilities Window.
  3. Choose a specific hard drive.
  4. Wait for the entire process to be complete.

Step 1 - Select Restart from the Menu

Back your Mac up before starting the process (just a reminder). Look at the top-left corner of the window and press the Apple icon. From the menu, you will see, select Restart.

Reinstall High Sierra Restart

Step 2 - Select Reinstall macOS from Utilities Window

Then press the Command + R keys. A macOS Utilities Window will be displayed. Select Reinstall macOS and press Continue.

Macos Utilities Window

Step 3 - Choose a Specific Hard Drive

Choose a specific hard drive. Usually, this is the Macintosh HD.

Reinstall Sierra

Step 4 - Wait for the Entire Process to Be Complete

Press Install. Then wait for the entire process to be complete.

That’s just about it. Easy. It’s like taking candy from a baby.

Part 3. Conclusion

Having problems with the macOS Sierra? Or are there problems during the installation process? That’s okay. We’ve got you covered.

You can reinstall the macOS Sierra to keep all your files and still have a fresh copy of the operating system. But before you do it, you should back up your files and clean your device using iMyMac’s Mac Cleaner.

The tool is easy to use and it’ll definitely prep up your device for macOS Sierra’s reinstallation.