How to fix SSD not mounting on Mac?

Posted by Katrina to Mac Data Recovery on November 21st, 2018

Most of time, when you plug a Samsung T3, Crucial, Sony or Sandisk external/internal SSD in your MacBook or Mac Mini, it will mount in Disk Utility. However, sometimes, an SSD can't show up in Finder or mount in Disk Utility. It can be so frustrating, especially when you need to transfer something right then. Don't worry, this passage will troubleshoot SSD not mounting on Mac issue.

Troubleshooting solutions to SSD not mounting on Mac

Start with the basics:

1. Check the cable. Try connecting the same device with a different cable.

2. Check whether the port is damaged. If you've got another port, try connecting the device to that one.

3. Reboot your computer. Sometimes, an SSD is not mounting, there are problems with macOS system. Fortunately, some damages can be easily fixed by restarting. So restart your Mac computer to see if the SSD is mounted.

Important: Back up important files

After doing basic checks, your SSD still can't recognized in Finder or desktop. The SSD may has some file system corruptions. In this situation, your data stored on the SSD is so fragile and any operation will overwrite the original data. So if you have important data on the drive, we suggest you follow the next step to recover lost data from unmountable SSD on Mac.

As a free and professional data recovery tool, iBoysoft Mac Data Recovery is highly reommended. It can recover lost data from unreadable SSD, recover lost data from formatted SSD, recover lost data from unmountable SSD, recover lost data from corrupted SSD, etc.

Aside from that, iBoysoft Mac Data Recovery can also recover lost data from unreadable hard drive, recover lost data from unreadable external hard drive, recover lost data from unreadable USB flash drive, recover lost data from unreadable SD card, etc. on macOS 10.15/10.14/10.13/10.12 and 10.11/10.10/10.9/10.8/10.7.

Tutorial to recover lost data from unmountable SSD on Mac with iBoysoft Mac Data Recovery

Step 1: Launch iBoysoft Mac Data Recovery.

Step 2: Select the unmountable SSD and click "Next" to scan lost files on the drive.

Recover lost data from unmountable SSD on Mac

Step 3: Preview the scanning results, choose files we need, and click "Recover" to get them back.

Step 4: Have a check to ensure we have got all lost files back.

Solution 1: Mount SSD in Disk Utility

Launch Applications > Utilities > Disk Utility (or just search Spotlight for it). Disk Utility will list all connected disks, with mounted or unmounted partitions listed below. If the SSD shows up in the list but one of partitions are not mounted, you can right-click the partition and choose Mount button.

Solution 2: Repair SSD with Disk Utility

If your SSD is still not mounting, you can try selecting First Aid to repair the disk.

Step 1: Go to /Applications/Utilities/Disk Utility/, then click Continue.

Step 2: In the sidebar, select the SSD that is not recognized.

Step 3: Click the First Aid button.

If Disk Utility tells you the disk is about to fail, back up your data and replace the disk. You can't repair the SSD. Otherwise, continue to step 4.

Step 4: Click Run.

Solution 3: Power cycle the drive

Disk Utility can't repair the disk? You can have a try to power cycle the drive.

Step 1: Start your system, hold the OPTION key and let it sit there for 30 minutes.

Step 2: After the 30 minutes shut down the computer and wait 30 seconds.

Step 3: Turn the system back on and hold the OPTION key again and wait another 30 minutes.

After these steps are complete than you can try the SSD again to see if it will be mounted in Disk Utility.

Solution 4: Fix SSD not mounting on Mac by erasing

This operation will remove all data on the SSD, please make sure you have backed up useful files with iBoysoft Data Recovery.

Step 1: Launch Disk Utility.

Step 2: Select the unmountable 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.

If the SSD is still not detected on Mac, the drive might be physically damaged. Should you send the drive to local technicians for reparation or replace it with a new one.

Still have questions?