Fix macOS Sierra Update Stuck or Fail

Abby Haines updated on Dec 14, 2017 to Mac File Recovery | How-to Articles


Follow the detailed steps to fix macOS Sierra stuck, froze or fail while downloading or installing. Don't ignore the behind tips to fully prepare your Mac for the update, and download EaseUS Mac data recovery software to recover lost data from macOS Sierra update.

The major update to Mac OS X - macOS Sierra official version now is released and available for all Apple users.Users can easily download and install the new update via Mac app store.But usually, macOS Sierra upgrade doesn't quite work the way it was intended.Many users reporting that macOS Sierra download stuck, macOS Sierra installation freeze, macOS Sierra installation stuck on grey screen or failed issue when they are trying to update to macOS Sierra. Have you ever encountered a similar macOS Sierra download or installation problem? don't worry! Here we show you how to fix macOS Sierra download stuck or failed to install issue with a step-by-step guide. 

Steps to fix macOS Sierra stuck,frozen or fail while downloading or installing

1. Get rid of any antivirus software installed on your Mac. 
2. Make sure you have created a Time Machine backup on hard drive. 
3. Press the power button and hold down the Shift key. 
4. Try updating software in Safe mode. 
5. Switch from wireless connection to hardwired connection. 

Whenever you faced macOS Sierra stuck, freeze or fail during downloading or installation, you can follow the above steps to fix the issue. And then you can get the update installed on your device successfully with no hassle. 

Tips to avoid macOS Sierra stuck, freeze or fail issue

For a safe and successful macOS, Sierra upgrade. Here we offer you some useful tips which can help to avoid macOS Sierra stuck, freeze or fail during the upgrade process.

Tip 1. Check whether your Mac device is available for macOS Sierra update

Before downloading and installing macOS Sierra, it's quite necessary to check out whether your Mac device is available for the new system or not. Otherwise, you might encounter macOS Sierra upgrade stuck, freeze or fail issue.

2009 and later: MacBook, iMac

2010 and later: MacBook Air, MacBook Pro, Mac mini, Mac Pro

Tip 2. Prepare your Mac devices ready for macOS Sierra update

To avoid macOS Sierra download or install stuck, freeze or fail issue, it's also necessary to check out what needs to be done first for gaining macOS Sierra smoothly on your Mac device. 

  • Leave at least 2GB memory and 8.8 GB storage space on your Mac device.
  • Leave at least 45% battery in your Mac.
  • Backup all your personal data and even create backups for your present Mac data through Time Machine.

Tip 3. Recover lost data after macOS Sierra update

If you lost your data after macOS Sierra upgrade but forgot to make a backup, you'll need to find professional Mac data recovery software to retrieve them back. EaseUS Data Recovery Wizard for Mac works well to recover data after Mac OS upgrade. It allows you to effectively restore files like Office files, music files, videos, pictures, emails or other archives within 3 simple steps. 

Step 1. Where was data lost after operating system update? Choose the location and click Scan.

select the location where data lost after operating system update and click scan

Step 2. EaseUS Data Recovery Wizard for Mac will immediately scan your selected disk volume and display the scanning results on the left pane.

scan the selected drive to find lost data

Step 3. After the scan, select the target files that were unknowingly lost during or after the update and click Recover Now button to get them all back.

click the recover now button to recover lost data after the operating system update


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Frequently Asked Questions

1. Why choose EaseUS Data Recovery Wizard?

"EaseUS Data Recovery Wizard is the best we've seen. It's far from perfect, partly because today's advanced disk technology makes data-recovery more difficult than it was with the simpler technology of the past, but it's fast and efficient..."PCMag

"The first thing you'll notice about EaseUS Data Recovery Wizard Pro is that its interface is very clear and uncluttered, with only a small collection of self-explanatory controls. You won't find lots of extra options hidden in a system of hidden menus, either; what you see really is what you get."techradar

"Recover lost files, even after deleting a partition or formatting your drive."Macworld

2. Why cannot I recover 2GB data for free?

It is recommended to check the version installed is Free or Trial because they are different versions.

Trial has data preview function but cannot save any files, while the Free version enables to recover 2 GB files. The default free space is 500 MB and you may share the product on social media to get another 1.5 GB.

3. Why cannot the recovered files be opened?

A file is saved as 2 parts on the storage device: directory info (which is comprised by file name, time stamp and size info, etc.) and data content.

If the files with original file names and folder structures cannot be opened, one possible reason is the corrupted directory info. There is still a chance to recover the data content with the RAW Recovery method in our software.

4. Why isn't it suggested to recover the files back to the original drive?

The storage structure of the lost files would be altered or damaged by any changes on the drive. If you save the recovered files back to the same drive, the original data structures and data content would be corrupted or overwritten, which causes permanent data loss. So you should prepare another disk to save the files.

5. How can I check whether my data is recoverable or not before purchase?

The Free version helps you save 2GB files, so verify the recovery quality of our product before purchase.

6. How long does it take to scan the drive?

It strongly depends on the capacity of your hard drive and the performance of your computer. As reference,most drive recoveries can be completed in around 10 to 12 hours for a 1-TB healthy hard drive in general conditions.

About Data Recovery Wizard

It's super easy to recover 250+ types of files after deletion, disk formatting and virus infection. Click the links and compare the difference of each version.