How to Fix External SSD Corrupting after Upgrading to Sonoma

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Finley· Answered on Feb 16, 2024

If you have upgraded your macOS and your external SSD suddenly corrupts and reads very slowly on your Mac or even stops showing up, you can try First Aid. But if the Disk Utility fails, the last resort is to reset the NVRAM. The step-by-step guide is as follows to fix external SSD corrupting after upgrading to Sonoma:

Step 1. On the top-left screen, click the Apple logo and choose "Restart" from the menu.

Step 2. Hold Command + Option + P + R keys to boot up the system.

Step 3. Your Mac will restart again. Now, you can release the keys when the Apple logo appears on the screen or after you hear the shutdown sound.

Step 4. Now, wait until it boots up.

For your information, if you are using the newest generation of Mac, you probably do not need to restart it. You just need to hold all the keys we mentioned above, and your NVRAM will reset automatically.

If your SSD can't be read again, how can you recover the data on it? This is the time when the EaseUS Data Recovery Wizard for Mac shines.

EaseUS Data Recovery Wizard for Mac will help recover lost data on your Mac smoothly and quickly like this:

• Connect your external SSD to your Sonoma, and open the EaseUS Data Recovery Wizard for Mac. Choose "Search for lost files."
• Now, you can choose one specific target file type from the left panel. 
• Double-click the file you want ro recover to preview. Then, click "Recover" to get your files back and save them to a safe location.

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