Summary: There are several reasons why your Mac won’t recognize external hard drive. If you are experiencing external hard drive not mounting in macOS Sierra or High Sierra, read on this post to get potential solutions to this problem. In addition, you can also learn how to recover lost external hard drive data on Mac computer.
Home > Mac Recovery > How to Fix Mac Not Detecting External Hard Drive in Sierra or High Sierra
Dec 24, 2017 I installed NTFS for Mac 15 on a MacBook Air (13 inch, 2017) running Mac OSX High Sierra (10.3.2). When I do System Preferences, NTFS for Mac, I immediately get a window that says 'Paragon NTFS for Mac 15 system extensioons is blocked! (I attach a screen snapshot). Hi guys so I have 2 Seagate hard drives that works perfectly well, but when I upgraded my mac to macos sierra, it just suddenly wont read it. My mac is MacBook 2015.
You plug in your external hard drive to Mac computer and try to create a Time Machine backup, only to find it refuse to mount and doesn’t show up in Finder. You may feel very confused because everything seemed all right the last time you used it. Relax, you are not alone. There are a lot of users have the same issue of external hard drive not showing up in macOS Sierra or High Sierra. How to fix this issue? Here are several tricks you can try to troubleshoot external hard drive not mounting problem on Mac.
How to External Hard Drive Not Showing up in Sierra or High Sierra1. Check your Finder preference
First of all, you need to make sure your Finder preference setting to correct. Go to Finder > Preferences > General and ensure that “Hard disks” and “External disks” are selected.
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Mac Won’t Recognize External Hard Drive – How to Fix
2. Check the USB hub
Also need to make sure your external hard drive is plugged into the USB hub properly, or it may not receive enough power to mount. How much disk space for mac os high sierra vista. You can try connecting the drive to another USB hub or plug it into a self-powered USB hub.
3. Run Disk Utility
If your external hard drive doesn’t show up in Fifer, open Disk Utility to see if it appears here. Go to Finder > Applications > Utilities and run Disk Utility. If your drive shows up here but isn’t mounted, click Mount. If your drive fails to mount, click First Aid to find and correct minor errors with your drive.
4. Install the latest drivers for your drive
If your Mac won’t recognize external hard drive after High Sierra update, the possible reason is that your drivers for external hard drive are not up to date. You can visit the related website to download and install the latest drivers for your drive.
5. Reset NVRAM
Resetting NVRAM (nonvolatile random-access memory) can be a general troubleshooting step for many Mac issues. To reset NVRAM, Shut down your Mac firstly. Next, turn on your Mac and immediately press these four keys together: Option, Command, P, and R. Hold those keys down until your Mac reboots again and you hear the second startup chime, then release the keys and let your Mac reboot normally.
Other External Hard Drive Problem on Mac
People usually back up important files to external hard drive to keep the files safe. But what if your external hard drive files get lost due to virus attack, accidental deletion, file system corruption or other reasons? If you unfortunately come across data loss with your external hard drive, you can use Stellar Stellar Phoenix Mac Data Recovery, an effective data recovery tool to help you salvage external hard drive files on Mac.
Worked on Mac computer, Stellar Phoenix Mac Data Recovery software is able to access and recover data from various storage devices and different file systems including HFS, HFS+, FAT, ex-FAT, or NTFS.
Here are steps to retrieve files from external hard drive with Stellar Phoenix Mac Data Recovery:
Step 1. Install Stellar Phoenix Mac Data Recovery on your Mac and plug in your drive. https://nicheheavenly436.weebly.com/blog/download-geektool-for-mac-os-x.
Step 2. Open the software and select file types to recover. Then click Next to continue.
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Step 3. Select your external storage device and click Scan. Printable mac keyboard shortcut page for macos sierra.
How to Recover Lost Files from External Hard Drive on Mac
Step 4. After the scanning process completes, select the files you want to recover and click the Recover button to save the files to destination.
How to Recover Files from External Hard Drive on Mac
Note: The free trial version only supports scanning & previewing lost files in your external hard drive, to completely recover your files, you need to purchase the full version of Stellar Phoenix Mac Data Recovery. Buy it now >
This entry was posted in on Dec 12, 2017 by Judy.
When you have the need to format a hard drive under macOS 10.13 High Sierra, it typically requires the use of third-party hard drive format software like Disk Utility. In this article, we will introduce you a few tools you can use for formatting hard drive under macOS 10.13 High Sierra. First of all, get your data backed up before do the format. Now, let's start to format a hard drive under macOS 10.13 High Sierra with some easy tools.
Solution 1: format hard drive under macOS 10.13 High Sierra with Disk Utility
Step 1: Open Disk Utility
Open Finder > Applications > Utilities > Disk Utility Ntfs For Mac
Step 2: Select the hard drive on the left. Libreoffice for mac os sierra download.
Note: If you don't see two passages filed at that point change the view in plate utility to demonstrate the drive and the volume. The view catch is in the upper left-hand side, change to Show All gadgets. This component was presented in macOS 10.13 High Sierra Step 3: Select ‘Erase ‘ which opens the accompanying window. Step 4: Rename the drive Step 5: Select OS X Extended (Journaled) for Format Step 6: Select GUID Partition Map for Scheme Note: If you don't see the plan choice, at that point you have chosen the volume and not the drive. Tap on the view catch in the upper left-hand side, change to Show All Devices. Select the non-indented section for your Seagate drive. Cautioning: Formatting the drive will eradicate all data on the drive, so you should duplicate any data you need off the drive before arranging. Step 7: Select Erase once more. Step 8: Plate Utility will begin organizing the drive. Step 9: Once total, click done. Please note that the formatted data on your hard drive still can be recovered by data recovery software. Solution 2: format hard drive under macOS 10.13 High Sierra with AweCleaner for Mac
Step 1: Download and install AweCleaner for Mac on your Mac.
Step 2: Run AweCleaner for Mac to format your hard drive.
Launch AweCleaner for Mac > Click Disk Manager > Select the hard drive and click on 'Format' button.
The data formatted by AweCleaner can be recovered by data recovery software. If you want to permanently erase data on the hard drive, you can try the solution 3.
Download Paragon Ntfs For Mac High SierraSolution 3: format and erase hard drive under macOS 10.13 High Sierra with AweEraser for Mac
AweEraser for Mac is a data erasure application. It can format your hard drive and erase all the data on your hard drive, beyond the scope of data recovery. It means the data on your hard drive will be permanently erased.
Step 1: Download and install AweEraser for Mac on your Mac.
Step 2: Launch AweEraser for Mac to format your hard drive.
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Launch AweEraser for Mac > Choose mode 'Erase Hard Drive' > Select your hard drive > Click on 'Erase' button. Then AweEraser for Mac will format your hard drive and permanently erase all data on the hard drive. The erased data will be lost forever.
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