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How to fix a wrong storage microSD card after restoring from another?

So I was trying to upgrade my microSD card for my Nintendo switch so I took the 128 GB microSD card out and plugged it into my Mac and created an image of it with Disk Utility and then took a 256GB microSD card (that I tested that it worked with the Switch) and restored it from the 128 GB image I made. Now the 256GB microSD card thinks it is 128 GB. How do I fix that?

Best Answered by

iBoysoft author Ciki Liu

Ciki Liu

Answered on Sunday, June 8, 2025

Your microSD card is still having 256 GB of capacity. The issue lies in you didn't select the entire device but only the volume when checking it in the Disk Utility. Here's how you can find the whole microSD card on both Mac and Windows. 

On macOS:

Step 1. Open Disk Utility from the Launchpad. In the right window, click on the View option.

Step 2. Choose Show All Devices

You can find your microSD card in the left column. Under it, you can see both the imaged volume as well as the unallocated volume. 

On Windows PC:

If you go to My Computer and check your SD card, it will only show the 128GB partition. However, if you check it in Disk Management, you can see the SD card shows 256 GB in total, with an unallocated space of 128 GB.

 

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