SD card showing up but saying there is no content in it
I inserted my SD card into my iMac and there was 12GB of content on the card. I tried to copy the content into my documents but my computer wouldn’t let me and all of a sudden the SD card started showing up blank. I looked at the info and it says the SD card is still holding 12GB of data, so I don’t think the files are lost?
I tried to eject the SD card but I got a message saying “The disk wasn’t ejected because one or more programs may be using it.”
Any help would be immensely appreciated.
iMac 21.5″, macOS 11.1