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Fixed: macOS Sierra Won’t Boot/Fail to Start Up after Update

updating macOS Sierra

macOS Sierra has now been updated into 10.12.2 version and many Mac users are trying to get developer’s beta version for their Mac devices so to get the latest new features. However, some users complain that their Mac computers stop working after installing new macOS Sierra. The exact problem is that macOS Sierra won’t boot after update. 

If you are having the same problem that your Mac fails to boot after updating macOS Sierra, don’t worry. Effective methods are available here to help you fix macOS Sierra won’t boot error without losing any data on your Mac now. Now let’s see how to fix macOS Sierra won’t boot or fail to start up after the update.

Method 1. Force to boot Mac to fix macOS Sierra fail to boot error

  • Press and hold the Power button for a few seconds till Mac turn off;
  • Wait a few seconds and press Power button to turn on Mac.

If this doesn’t work, you may need to try other 4 methods here in this article.

Method 2. Try Safe Boot Mac from Safe Mode to fix macOS Sierra won’t boot error

  • Turn on Mac, press Shift when you hear the startup sound and release it till you see Apple logo;
  • After Mac fully starts, restart the computer normally without holding any keys/buttons.

Wait patiently till Mac computer finish the reboot process.

Method 3. Use Disk Utility and restore from Recover Mode to fix macOS Sierra fail to boot error

  • Boot Mac up, press Command + R during the boot-up process;
  • Click Disk Utility option > Click First Aid and try repairing Mac’s disk;
  • Disk Utility will automatically run fsck (file system check) operation to help you repair macOS Sierra fail to boot error;
  • If this fails, try to restore from Recovery mode.
  • Reinstall OS X in Recovery Mode will automatically download and install the latest macOS Sierra for your Mac device.

Method 4. Use Terminal to fix macOS won’t boot error after update

  • Open Terminal Applications > Utilities;
  • Enter: system_profiler SPExtensionsDataType > ~/Desktop/kextList.txt and hit return;
  • Open the kextList.txt file on desktop > Press Apple(Command) + F to bring up find;
  • In the find field insert “Obtained from Not Signed” and copy the destination to the .kext file to a list for use later;
  • Click Next to cycle through all of them, for example: /System/Library/Extensions/JMicronATA.kext
  • Browse your drive to /System/Library/Extensions and remove all unsigned text files;
  • Reboot and your Mac boot problem shall be all set.

Method 5. Reinstall macOS Sierra to fix boot error after update

The last method to fix macOS Sierra fails to boot after update error is to reinstall macOS Sierra. You can download wanted macOS Sierra and create the new bootable drive to clean install macOS Sierra on your computer again.

Then macOS Sierra fails to boot or cannot start up after update error will be thoroughly solved.

Extra Tip: Restore lost data due to macOS Sierra failure

In order to avoid unexpected data loss trouble due to macOS Sierra update, or if you have lost some data after fixing macOS Sierra won’t boot after the update, you can try to restore backups from Time Machine.

But if you don’t have any backups, you may try professional Mac data recovery software EaseUS Data Recovery Wizard for Mac to get all lost Mac data back. It allows you to restore all lost data due to macOS update or other reasons within 3 steps. Just download it and let it help get all lost data backup now:

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

macOS Sierra failure

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

 EaseUS Data Recovery Wizard for Mac

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.

macOS Sierra

To get more information, visit EaseUS Software Official Website

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How to Edit PDF and Also Write About Different PDF Editors with Functions

How to Edit PDF

Editing the PDF files have always been a challenging task, and we all struggle to finish it. Of course, pdf file editors are very much useful especially for college students, and for official assignments. Most of us don’t know how to edit a pdf file. Of course, even I don’t know, how to edit a pdf file. Word document or Excel documents can be only and quite easily edited, but once a word file or a document is converted, packaged into a pdf file, it cannot be edited. You cannot even select the whole file just like you do in a word document. Of course, whenever we need any invoices, essential or confidential data to be sent across, we can make use of PDF file formats and share them safely.

It is also beneficial if we are using these PDF files on the internet, it will be helpful for you. Editing the PDF files can be tough for most of you and hence, here we have discussed a few easy steps and guidance to help you edit your pdf file.

How to Edit a PFD File? 

Before we begin with editing a pdf file, you must know every single detail about a pdf file. So, what’s exactly is a pdf file? The PDF file is that type of file format or a kind that enables you to send across various texts wrapped in a page but are only available to read and not for editing or formatting. Also, it doesn’t matter what type of software you are using to open a pdf file. Even the images and graphics that have been added in a pdf file cannot be edited that easily. Here we have got some simple guide and the most natural steps to edit a pdf file.

  • It is pretty simple, and you have to open the Adobe Acrobat.
  • Once opened, you will see the select file, and then an open option.
  • Now you have to select the PDF document that you want to edit from the windows or your system storage.
  • Once you have opened the file, click on Edit Pdf file or document mentioned in the toolbar.
  • You need to keep your cursor over or above the text that is present in the pdf file.
  • Once done, save the modifications and changes that you have made in the pdf file. 
However, we have also got some extreme level of a pdf file. 

1. APower PDF Editor 

With this PDF editor, you can either edit the files that are already present in the pdf document, or you can create an entirely new text or a file. It has got a great list and selects of edit tools, with which you can get a lot of options to edit a pdf file. You can also avail for the best PDF conversion options within the data itself. You will even get the opportunity for creating a scratch from the PDFs that are available. This PDF editor has got zero limitations or hurdles that will affect your editing task. Hence, get this tool and edit those pdf files quickly. 

2. Sedja

Sedja is another popular PDF editor that is available in the software and tools online market. Availing the tool is just easy and simple. It has got an excellent option for tools. You actually don’t have to download the software or the options that are available in the software. You can also choose your own tools from the tool or the software. It has also got an option of saving the files online, also known as cloud storage. Before you begin using the software, you need to know that each session lasts only for three hours, later you will have to begin a new session. So, make sure you finish your task at that time. 

3. Foxit PDF Editor

Of course, most of you might have already heard about this famous and popular pdf editing software. This pdf editor provides an exceptional level of functionalities and usages that are needed by many of us. Sometimes, we might need some texts to be edited and corrected, but how about when you have those essential images in a pdf file. At such times, the need for Foxit pdf editor arises out of nowhere. It gives a professional touch to all those words within your file. Also, using this software is quite easy and simple too. Hence, you won’t be having any struggles to issues while operating this tool. 

4. Adobe PDF Editor 

This one should be in the first place. Because we all know what Adobe is and have used many tools and software from Adobe. Of course, this tool is widely used and is known as the most popular pdf editor or the reader. You might be aware of Adobe pdf viewer, and yes, it is very different from Adobe PDF editor too. PDF editor is very much important for both small businesses and large businesses. Even students do need pdf editors sometimes, just like I mentioned above. It has an excellent standard and levels of features that mark this tool as the best one in the market. 

5. Crop PDF Online with HiPDF Editor

HiPDF editor is the most useful and beneficial pdf editor that we must use. You can avail great services with this tool. You can only opt for editing the text with different levels of tools which has an extreme set of features and benefits for sure. Of course, Crop PDF online is available in most of the PDF editors. But you can also go for editing your PDF file online, without having to download any tool, if it’s a one-time editing task. 

Conclusion

If you don’t know to edit a pdf file, then it can be a great challenging task for all your pdf editing tasks. Hence, you can opt for editing those files online, or you can also use the pdf as mentioned above editors with all those features mentioned along.

 

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