How to fix MacBook Pro SSD not mounted/booting/recognizing?

Posted by Katrina to Mac Data Recovery on January 21st, 2019

I got my MacBook old hard drive replaced with a shiny new SSD but ran into problems. After hitting the power on button, I heard the familiar start-up chime but Mac screen turned white or gray and showed no sign of progress. When I booted into Recovery Mode, the new SSD was greyed out and unmounted. How to fix?

Apple always does everything to make MacBook Pro’s hardware sleek and powerful but it isn’t immune to hard disk failure, viruses, physical damage and other threats that can result data disaster condition. Sometimes, your MacBook Pro SSD won’t mount or MacBook Pro doesn't recognize the SSD in Disk Utility, which prevents the system from boot up correctly.

Don’t be panic, the SSD can be found in Disk Utility, you can make sure it doesn't have any hardware problems. This passage will show you how to fix MacBook Pro SSD not mounted as well as recover data from the unbootable Mac computer.

First of all: Data recovery from unmountable MacBook Pro SSD

No matter what causes MacBook Pro SSD not booting issue, all your critical data becomes inaccessible. If you didn’t back up or keep backups updated, the first and foremost thing is to recover data from the unmountable MacBook Pro SSD.

As your MacBook Pro won’t boot from the internal hard drive, it’s not easy to get lost data back, but it’s not impossible with iBoysoft Mac Data Recovery. The program is a free Mac data recovery tool that helps you recover documents, pictures, audios, videos, emails when SSDs, internal hard drives, Macintosh HDs not mounted in Disk Utility. Even when your MacBook Pro/Air, iMac, Mac mini won't boot, it is able to transfer files from a broken Mac to a new Mac.

Unlike other data recovery software that need to take out the internal SSD, you are able to create a bootable drive to recover data or run iBoysoft Mac Data Recovery from iBoysoft server.

Method 1: If you have only one Mac computer

If you have only one Mac computer, please directly run iBoysoft Mac Data Recovery bootable media from iBoysoft Server and recover lost data from the unmountable MacBook Pro SSD.

Method 2: If you have two Mac computers

Step 1: Download iBoysoft Mac Data Recovery on the healthy Mac computer.

Step 2: Install and launch iBoysoft Mac Data Recovery on this Mac computer.

Step 3: Click iBoysoft Data Recovery on the menu bar and then select "Create Boot Drive".

iBoysoft Data Recovery create bootable drive

Step 4: Insert a USB drive into this healthy Mac computer.

iBoysoft Data Recovery create bootable drive

Step 5: Follow the wizard to create a bootable recovery drive on the USB drive.

iBoysoft Data Recovery create bootable drive

iBoysoft Data Recovery create bootable drive

Step 6: When the creation process completes, you can insert the USB drive into the unbootable Mac computer, and then press the Power button and Option key (⌥) to start the Mac up.

iBoysoft Data Recovery create bootable drive

Step 7: Select iBoysoft Mac Data Recovery from the boot options.

Step 8: Follow the wizard to scan for the lost data on the unmounted MacBook Pro SSD.

Step 9: Choose the files you want to get back, and then click Recover button.

Besides, iBoysoft Mac Data Recovery can also recover data from formatted drives, recover data from unreadable drives, and recover data from corrupted drives, etc. It is fully compatible with macOS Mojave 10.14/High Sierra 10.13/10.12 and OS X 10.11/10.10/10.9/10.8/10.7.

How to fix MacBook Pro SSD not mounted/booting?

Fix 1: Run First Aid to repair unmounted MacBook Pro SSD

Within the Disk Utility, First Aid is a function for checking and repairing files system errors. Fortunately, macOS also provides an option to run First Aid on startup drives, just follow these steps below:

Step 1: Boot your Mac into Recovery Mode. Start your MacBook Pro and hold down the Command and R keys simultaneously until you see an Apple logo or spinning globe. Then release the keys.

Step 2: Select Disk Utility from the macOS Utilities menu and click Continue.

Step 3: Select the unmounted MacBook Pro SSD from the left-hand panel.

Step 4: Click First Aid on the top of the window and wait while it verifying and repairing errors.

Fix 2: Reformat and reinstall to fix MacBook Pro SSD not mounted/booting

If the MacBook Pro SSD has serious logical errors, Disk Utility cannot repair the disk. In this case, reformatting is the most effective solution to bring back your MacBook Pro to a normal working state. Please be sure you have backed up as the reformatting process will erase all data on the SSD.

Step 1: Boot your Mac to Recovery Mode.

Step 2: Select Disk Utility from the macOS Utilities menu.

Step 3: Select the unmountable MacBook Pro SSD from the side bar.

Step 4: Click Erase from the top.

Step 5: Setup the required information (i.e. Name, Scheme, Format, etc.) to reformat the disk and click Done when finished.

Step 6: Go back to macOS Utilities screen and select Reinstall macOS.

Still have questions?