Recover Files from External Hard Drive Not Recognized Mac Sierra


Sometimes, your Mac Sierra won’t recognize your external hard drives. This situation occurs when after you initially eject the drive and unplug it from your system. But when you try to plug in the external hard drive again, your Mac Sierra did not recognize it. In most of the cases, the only way to solve this issue is to remove the external hard drive and then restart your Mac Sierra to show the drive. If the problem is still, there then you can follow below-mentioned steps:

Solution 1:

Go to Settings, > Finder Preferences. Under the General tab, select the external hard drive in “Show these items on the desktop”.

Solution 2:

Go to Disk Utility and select the external hard drive. Choose verify disc. It will find and correct minor errors.

Solution 3:

If you are connecting the external hard drive with Mac Sierra using USB Hub, then check the USB Hub first.

Solution 4:

From the Finder menu, choose “Go to Finder”.

Type external hard drive path (i.e. /Volumes/selectdisk)

Solution 5:

External hard drive not showing up in Finder but visible in Disk Utility?

Then go to Finder window and view below the favorite list. If the drive greyed out? Select the external hard drive. It might visible.

Solution 6:

  • Shutdown your Mac Sierra.
  • Unplug the power chord.
  • Unplug all USB connections.
  • Wait for sometimes then plug it back in.
  • Now, turn on your Mac Sierra.
  • Plug the external hard drive only to the USB port. Now, Open Finder and check the external hard drive.

Solution 7:

Install and run Onyx (maintenance freeware) or run and restart your Mac Sierra.

Solution 8:

  • Sometimes this issue might happen due to unspotted drive format. 
  • Install Fuse for OS X, NTFS-3G for Mac Sierra and Fuse wait.
  • Now, restart your Mac Sierra system and check the issue.

When you are following above-mentioned methods, it might be possible that you may lose files from the external hard drive not recognized Mac Sierra. So, in such situation, you can opt Drive Recovery Software which is capable of recovering files from an external hard drive not recognized Mac Sierra. For more details, you can visit this link:

Significant Features of the Drive Recovery Software:

  • Provides Time Machine Recovery Support (MacOS Sierra) and Time Capsule Support OS Sierra
  • Recover files lost after being deleted or formatted from MacBook Pro, Air, Mac Mini, iMac, and Mac Pro.
  • With the help of this software, you can also recover data from pen drive, USB drive, memory card, etc.
  • Recover files from an external hard drive not recognized Mac Sierra without modifying or altering the original content.
  • Know how to recover files from external hard drive not recognized Mac Sierra
  • Provides preview option to view the recovered files before saving them.
  • Allows imaging of Mac Sierra hard drive and volumes through ‘Create Image’ feature.
  • It recovers data from various brands of the external hard drive such as Iomega, Samsung, Seagate, Western Digital, etc.

Steps for recovering lost data from external hard drive:

Step 1: Download and install the demo version of Drive Recovery Software and run the software to recover files from an external hard drive. From the main screen, select “Recover Drives” option.

How to Recover Files from External Hard Drive Not Recognized Mac Sierra? - Main Screen

Fig 1: Main Screen

Step 2: Now, choose either one of the option among “Partition Recovery” and “Formatted or Reformatted Recovery” options to perform file recovery from external hard drive.

Recovering Files from External Hard Drive Not Recognized Mac Sierra - Select Mode Screen

Fig 2: Select Mode Screen

Step 3: The software scans the entire external hard drive. Choose your external hard drive from which you want to recover file.

Recover Files from External Hard Drive Not Recognized Mac Sierra - Select Drive Screen

Fig 3: Select External Hard Drive

Step 4: Now, you can “Save” the recovered file to your desired location.

Recover Files from External Hard Drive Not Recognized Mac Sierra - Save Recovered Files Screen

Fig 4: Save Recovered Files Screen

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