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Summary: This a full guide to external SSD not recognized on Mac issue, which includes both reasons and solutions to this issue, as well as how to recover lost data when external SSD is not showing up on Mac.
You can't access a Sandisk, Crucial, or Samsung T3 when the external SSD is not recognized or detected by Mac, whether the external SSD was working for a long time or it's a new SSD you bought recently. However, hard drives not working or showing up issue is so prone to happen even when you unplug the external SSD from the Mac and later on plug in the SSD again. It's definitely frustrating, especially when you have important files stored on it.
How can you fix the unrecognized external SSD and access your files stored on it? You will find the answer and troubleshoot this problem in this post.
Why is external SSD not recognized on Mac?
Various reasons are leading to external SSD not showing up issue on Mac. Here we conclude four main causes as below:
1. The SATA to USB 3.0 adapter/Dock is malfunctioned.
Usually, you need to buy an additional dock, disk case, or SATA adapter to access an SSD drive. During this process, if the externally connected SSD is not recognized by your Mac, it's likely that the adapter is not compatible with the disk's SATA interface, or the dock/drive caddy is faulty.
2. The external SSD is new and uninitialized.
This happens when users externally connect the SSD to backup or transfer files on the internal hard drive. But many newly bought SSDs are not initialized with a file system, which means there is no entrance for macOS to recognize and communicate with this SSD, and for sure, the external SSD won't show up.
3. The external SSD has a file system that can't be recognized by Mac.
Possibly, the SSD that you try to access is formatted with a file system. However, it's not a file system that your Mac can recognize. For example, it is formatted with a Linux file system. In this case, your macOS can't recognize the external SSD surely.
4. New software or firmware needs to be updated.
This happens frequently for Samsung portable SSD T5/T3, because you need to install Samsung portable SSD Software to unlock disk's password and update certain firmware for this SSD. And if the necessary software and extension are not downloaded, you may receive 'No Samsung portable SSD is connected' from its software.
5. The external SSD is not set to show up on Mac.
How to play ios apps on mac. Sometimes, your external SSD actually is recognized by the Mac, but some setups stop the SSD from showing up in the Finder, on the desktop, or even in the Disk Utility.
6. The external SSD is corrupted.
Another possible cause is that you have unsafely ejected your SSD, which makes the external drive corrupted after some core data like partition table or file system is damaged. Also, you need to be clear that the life span of an SSD is limited depending on how frequently you use it.
7. Other Hardware problems.
How to fix external SSD not recognized on Mac?Solution 1: Check whether the external SSD is properly plugged in
Since all SSDs use SATA interface, so when an external SSD is not recognized by Mac, the first and foremost solution is to check whether the external SSD is properly plugged in. So simply do these checks:
Tips: If the unrecognized external SSD is a Samsung T5/T3 SSD, and you got the 'System Extension Blocked' and 'No Samsung Portable SSD is connected' messages when executing Samsung Portable SSD Software, simply go to System Preferences > Security & Privacy > choose Allow button next to the message: System software from developer 'Samsung Electronics' was blocked from loading.
Solution 2: Reboot your Mac computer
Sometimes, Mac externalSSD not mounting issue is caused by the system issues. But you easily fix them by restarting. The restarting process will refresh your macOS's memory and starts it up fresh, which works efficiently especially when the USB port is busy. Simply choose the Apple menu and click Restart.
If you are interested in, you can learn what happened inside when Mac doesn't recognize an external drive with details.
Solution 3: Find the unrecognized external SSD in Disk Utility
When an external SSD is not showing up on Mac, the most necessary step is to check whether the external SSD can be found in Disk Utility. If the external SSD can be found in Disk Utility, you make sure that the drive doesn't have any hardware problems. But if you can't find it listed in Disk Utility, the external SSD might be physically damaged.
So simply Go > Disk Utility > View > Show All Devices to check the external SSD.
Solution 4: Repair the unrecognized external SSD with First Aid
If your external SSD shows up in Disk Utility but not mounted, you can right-click the drive and select Mount menu and then the SSD will show up on Mac. If the Mount button is grayed out or you fail to mount the external SSD, try running First Aid to verify and repair disk errors.
Step 1: Launch Disk Utility.
Step 2: Choose the grayed out external SSD from the left sidebar.
Step 3: Select the 'First Aid' tab on the top.
Solution 5: Reformat the unrecognized external SSD without data loss
If all solutions above don't work, the external SSD might be corrupted and you need to reformat it. The thing is, reformat will cause data loss. But actually, whether the external SSD is not recognized due to logical disk errors or hardware problems, the most important thing is your files on the drive. So, to prevent data loss, you need to get your files off this external SSD first if you forget to back up. Hopefully, you can recover lost data from the external SSD with the help of professional Mac data recovery software.
iBoysoft Data Recovery for Mac is highly recommended here to recover lost data from unrecognized external SSD. Best journal app mac free trial. It's a free and professional data recovery tool, which can recover lost data from corrupted, formatted, unreadable, and unmountable SSD. This software works on macOS 10.15/10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7.
Moreover, iBoysoft Data Recovery for Mac supports main storage devices including hard drives, external hard drives, USB flash drives, SD cards, memory cards, etc. and multiple file formats such as documents, audios, pictures, videos, emails, etc.
Tutorial to recover lost data from unrecognized SSD on Mac with iBoysoft Data Recovery for Mac
Step 1: Launch iBoysoft Data Recovery for Mac.
Step 2: Select the unrecognized external SSD and click 'Next' to scan lost files on the drive.
Step 3: Preview the scanning results, choose files we need, and click 'Recover' to get lost files back from the unrecognized external SSD.
Step 4: Have a check to ensure we have recovered all lost files.
After your important data is recovered, you can go ahead to fix this issue by reformatting without data loss.
Tutorial to reformat the unrecognized external SSD
This guide to reformat external SSD will remove all data on the external SSD, please make sure you have recovered all useful files with iBoysoft Data Recovery.
Step 1: Launch Disk Utility.
Step 2: Select the external SSD on the left part of the window.
Step 3: Click 'Erase' on the top of the Disk Utility window.
Step 4: Complete related information (name, format, scheme), then click Erase.
Solution 6: Send the external SSD to a local technician for help
If unfortunately, the external SSD can't show up in Disk Utility or the solutions above failed to fix external SSD not recognized issue, the drive might have some hardware problems. You need to contact the manufacturer for technical support or product replacement.
• Fix SSD not showing up in Windows 10/8/7
Some SSD support pages you may need:
How to Use Crucial SSD Clone Software to Move OS
Overview of the Best Crucial SSD Migration Software
Solid-state drives (SSDs) are designed to store important data and speed up your system. In our daily life, we often use Seagate, Crucial, and Sandisk SSDs. But some people are wondering how to transfer data or OS to Crucial SSD. All you need is Crucial SSD migration software.
The best Crucial SSD migration software we're going to introduce is also known as Crucial SSD clone software, and it's called EaseUS Todo Backup Software. Don't take the name wrong, as it's indeed a backup and recovery program, however, the highlighted feature of which is disk partition imaging and cloning. And most of all, it supports cloning HDD/SSD to any type of Crucial SSDs in a straightforward and fast manner.
As it tested out, the disk clone feature in EaseUS todo clone software enables migration of the operating system, disk partition, documents, pictures, and installed programs with settings for all Crucial SSD models, including Crucial MX200, MX100, BX100, and M500 Series, etc.
We know the significance of migrating data from one hard drive to another, especially the operating system. When you're planning to upgrade a hard disk drive or the current sluggish solid-state drive to a Crucial one, try EaseUS Windows backup software. It's easy, quick, and safe.
Part 1. Migrate OS, Programs, and Data to Crucial SSD by Cloning
As soon as you launch EaseUS Todo Backup software, on the main window, you'll easily find the 'Clone' option. That's the feature you're going to use to migrate everything you need to a Crucial SSD. Disk clone will transfer all data (include the operating system and program) on the selected hard disk to another. It is especially useful when you want to replace the hard disk with a new one. For a successful disk clone, ensure that the capacity of the destination disk is larger than the used space of source disk.
Before getting started, there are some tips you should read carefully
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Follow the steps to clone HDD/SSD to Crucial SSD with the best Crucial SSD migration software:
Step 1. Launch EaseUS Toto Backup and click 'Clone'.
Step 2. Select the Windows disk or partition that you need to clone and click'Next'.
Step 3. Choose the target partition or hard disk that you want to clone to.
Do remember to tick Sector by Sector clone under Advanced options so to clone every part of the Windows 10/8/7 partition or disk without losing anything.
Step 4. Preview the disk layout to confirm the settings of the source and destination disk. Click 'Proceed' to execute disk clone.
Part 2. How to Transfer Programs Only to Crucial SSD (Extra Tips)
If you only want to transfer applications to a Crucial SSD, you can use another easy-to-use utility - EaseUS Todo PCTrans. With it, you can do the following things:
Follow the steps below to transfer wanted applications to Crucial SSDs:
Step 1. Connect new SSD or HDD to your PC and Run EaseUS Todo PCTrans
1. Connect the new SSD or HDD to your computer and initialize it to make the drive accessible.
2. On the main screen of EaseUS Todo PCTrans, click 'App Migration' and click 'Start' to continue.
Step 2. Select apps, programs on the source disk and select SSD or HDD as target disk to transfer
1. On the source partition where you installed apps, tick desired programs (marked as 'Yes') that you'd like to transfer to your SSD or HDD.
2. Click 'Browse' to select the new SSD or HDD as the destination and click 'Transfer' to move the selected programs.
Step 3. Wait for the transferring process to finish
When the process finishes, click 'OK' to complete. Best mac 2017 apps.
Then you can restart your PC to keep all the changes and you can run the transferred program on your new SSD or HDD again.
Conclusion
That's all about transferring everything to Crucial SSD. If you want to move everything including OS, applications, and data, choose the Disk Clone feature in Part 1. If you only want to move OS, use the 'System Clone' feature of EaseUS Todo Backup. If you want to move programs only, refer to Part 2.
Crucial SSD Clone Software Frequently Asked Questions
These questions and answers can provide you with additional help, you can read on.
Does Crucial SSD come with cloning software?
No, it doesn't come with cloning software. But EaseUS Todo Backup, available as a free download, can clone drives and backup your operating system, applications, settings, and all of your data.
How do I clone my hard drive to M.2?
To clone hard drive to M.2 SSD
Step 1. In 'Disk Mode', select the HDD that you want to clone.
Step 2. Select the SSD as your destination.
Step 3. Edit the disk layout and then click 'Proceed' to continue.
Step 4. Wait for the process to complete.
What is the best free drive cloning software?
Top free disk cloning software of 2021:
Crucial Ssd Mac Pro
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