May 24, 2018 If your Mac is not recognizing a USB or external hard drive after this, you’ll have to try mounting it manually. Mount an external hard drive on Mac. If Mac isn’t automatically recognizing your external hard drive, it’s time to force it to. Connect your hard drive and follow these instructions: Go to System Preferences Disk Utility. If the password input screen does not appear automatically, select the “T7 TouchSETUP” drive recognized on your PC, then open the SamsungPortableSSDSetupWin1.0.exe for Windows OS or SamsungPortableSSDSetupMac1.0.pkg for mac OS file to display the password input screen.

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Apr 26, 2019 Most of the time, the Mac internal hard drive, usually known as Macintosh HD, is the system drive of the Mac computer, from which your Mac start or boot up. However, it may drive you crazy if the Mac internal hard drive won't mount. That's because once that happens, your Mac computer may be stuck on loading/login screen or not bootable at all.
If the drive needs to be formatted then click on the article that matches the operating system. How to format a drive in Mac OS 10.6 to 10.10 How to format your drive in macOS 10.11 and above. If the drive is not detected in Disk Utility then check System Information/System Profiler.
Mar 14, 2017 I tried reset nvram, also use other port, I even test another bootable USB but it can be detected, just the external windows 10 USB drive not detect on MacBook Air during boot, but once boot in macOS It show up as external drive. Only filevault enable no firmware password etc.

Summary: This post will show you solutions to fix the Mac not recognizing internal hard drive issue. Also, you can learn how to recover lost data from unrecoginzable Mac internal hard drive with data recovery software for Mac - iBoysoft Data Recovery for Mac.

Usually, the internal hard drive is the statup/boot drive for a Mac. It not only loads the operating system but also is responsible for storing data. Therefore, it is frustrating if your Mac doesn't recognize the internal hard drive and you can't access the data on this drive. What's worse, when you want to recover lost data, you find that you don't have any data backup. Luckily, according to your situation, this article will provide 4 feasible solutions for you to fix Mac not recognizing the internal hard drive.

Scenario 1: The internal hard drive can be recognized by Disk Utility

If your Mac doesn't recognize the internal hard drive, you can check if Disk Utility under Recovery Mode is able to recognize it. This really matters because if you can see the drive but the internal hard drive is not mounted in Disk Utility, your internal hard drive has no hardware problem and you can try the following solutions to fix your issue.

Solution 1: Repair with First Aid in Disk Utility

The issue that Mac doesn't recognize the internal hard drive could be fixed with First Aid under Recovery Mode. macOS Recovery is part of the built-in recovery system of your Mac, from which you can start up and use its utilities to repair certain logical errors of the internal hard drive.

Step 1: Restart your Mac and immediately press and hold Command + R keys to get into macOS Recovery mode, then release the keys when you see the Apple logo.

Step 2: Select Disk Utility in macOS/Mac OS X Utilities and click 'Continue'.

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Step 3: Select the internal hard drive and run First Aid to check and repair errors in this drive.

Solution 2: Try to boot in Safe Mode

Booting in Safe Mode will check the errors in the directory of your internal hard drive. To boot in Safe Mode, you need to restart the Mac and hold 'Shift' immediately, and release it until you see the login window. When you see a 'Safe Boot' message on the startup window, you can restart the Mac and try to recover data from this internal hard drive.

Solution 3: Recover lost data and erase the unrecognizable internal hard drive

If the internal hard drive is not recognized by your Mac still, then the file system of this internal hard drive could have corrupted. Is there any other way that you can access the data on this unrecognizable internal hard disk? Of course. You can recover lost data from this unrecognizable internal hard disk with Mac data recovery software like iBoysoft Data Recovery for Mac. Then, you can reformat this internal hard drive so that you can use this drive again.

iBoysoft Data Recovery for Mac is professional Mac data recovery software. It can not only recover lost data from a Mac that is unbootable, but also recover documents, photos, emails, music, etc. from formatted/unmountable/inaccessible external drives. This software supports recovering data from encrypted APFS, APFS, HFS+, exFAT, FAT32 drives on macOS Catalina/Mojave/High Sierra/Sierra and OS X 10.11/10.10/10.9/10.8/10.7.

Method 1: If you have only one Mac computer

If you have only one Mac computer, please directly run iBoysoft Data Recovery for Mac in macOS Recovery mode and recover lost data from the unbootable Mac computer. This method is greatly recommended because it is easier and more effective.

Method 2: If you have two Mac computers

Step 1: Download iBoysoft Data Recovery for Mac on another Mac, install and launch it.

Step 2: Click iBoysoft Data Recovery at the upper left corner of Mac menu bar and select 'Create Boot Drive'.

Step 3: Insert a USB drive into the healthy Mac computer.

Step 4: Follow the wizard to create a bootable recovery USB drive.

Step 5: After you have completed creating boot drive, insert this bootable USB drive into the failed Mac and press the Power button and Option key (⌥) to start the MacBook up.

Step 6: Select iBoysoft Data Recovery for Mac from the boot options.

Note: If you're running macOS Mojave or earlier, iBoysoft Data Recovery for Mac will launch immediately when your Mac boots up. But, if your Mac is running macOS Catalina, you need two additional steps to launch this program.

span>Step 7: Wait for your Mac to boot up, open 'Terminal' application from 'Utilities' drop-down menu.

Step 8: Run the following command:

Step 9:Follow the wizard to recover lost data from the internal hard drive.

Step 10: Restart the Mac, press and hold Command + R keys immediately to get into macOS Recovery mode.

Step 11: Select Disk Utility in the Utilities and click 'Continue'.

Step 12: Select the internal hard drive and click 'Erase' to reformat this drive.

Step 13: Return to macOS/Mac OS X Utilities in macOS Recovery mode and select 'Reinstall macOS'.

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After reinstalling the operating system, this internal hard drive could be showing up again.

Scenario 2: The internal hard drive cannot be recognized by Disk Utility

However, if your Mac can't recognize the internal hard drive, this internal hard drive might have some hardware problems. You can either send it to a local repair store, which could be costly, or say goodbye to this drive and buy a new one.

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FAQs

Samsung External Hard Drive Not Showing Up On Mac

Here you’ll find frequently asked questions and solutions for your computing life upgraded with Samsung V-NAND SSD.

I cannot run the Samsung Portable SSD Software.
The Samsung Portable SSD Software can only run on the following OS versions or newer:
- Windows OS: Windows 7 or higher
- Mac OS: Mac OS 10.10 or higher
For more information, please contact the nearest Service Center, which can be found in the user manual and on Samsung.com minisite at (http://www.samsung.com/sem