Will you experiencing the issue of how to format SD card on Psvita, then try the steps listed below to see if they will resolve your problem:
1. Go to your computer’s Settings.
2. Next, look for the Format section by scrolling down.
3. Next, select the option to format the memory card.
4. Select the Format button now.
5. Your SD card will be formatted on Psvita.
To Read More: https://onewebinc.com/how-to-format-sd-card/