Most of us have been there: You're out taking photos and your memory card is full, but you don't have another with you. Or ...

If you're a keen photographer, you probably have a lot of memory cards that need to be wiped. Here's how to format SD and microSD cards safely within macOS.

Formatting a memory card deletes all of the files stored on it immediately. You can format an SD card using the menu system on your Fuji camera or by inserting it in your computer's card reader.