Unmountable hard drive can happen to anyone at any time. When you connect a USB hard drive to your Mac, you may see it in Disk Utility as "Not Mounted".
This article will give the reasons and solution to this situation.
Hard drive fails to mount due to vast reasons. Here are some common reasons.
Besides those reasons, there are other reasons make a hard drive cannot be mounted successfully. Data in your unmountable hard drive will be lost. If your hard drive fails to mount on Mac, you need to recover data from unmountable hard drive first, and fix the issue of unmountable hard drive later.
To recover data from unmountable hard drive sounds complex and troublesome to you. However, data in unmountable hard drive can be efficiently and easily recovered with the help of prominent unmountable hard drive data recovery software - iBoysoft Mac Data Recovery.
iBoysoft Mac Data Recovery is professional software that helps you to recover lost/deleted documents, photos, videos, emails, music, etc. from storage devices in macOS 10.13 (High Sierra), macOS 10.12 (Sierra) and Mac OS X 10.11/10.10/10.9/10.8/10.7/10.6. It can efficiently recover data from unmountable hard drive, external hard drive, USB drive, memory card, SD card, etc. on Mac. And iBoysoft Mac Data Recovery is safe and easy to use.
You can recover data from unmountable hard drive on Mac with 4 simple steps.
Step-by-step instruction to do unmountable hard drive data recovery
Besides helping to recover your data from unmountable hard drive, external hard drive, USB drive, memory card, SD card, iBoysoft Mac Data Recovery works well for you to recover data from unreadable external hard drive, inaccessible hard drive, formatted drive.
After recovering your data from recover data from unmountable hard drive, you can open Disk Utility and run "Erase" to format that unmountable hard drive, then it will work regularly again.
For users who want to recover unmountable hard drive on Mac, please refer to how to recover unmountable hard drive on Mac.
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