SD Card having problems in TAZ4

My SD card started having problems recently. It will not allow me to navigate to my prints. In fact, it shows that nothing is on it. But I am able to take it out and put it back in while on the main screen and it generally starts working again. It has gotten increasingly worse lately though. Is this common?

Also, is there a way to safely eject the card from the machine without damaging it?

SD cards are flash memory. With heavy use they do degrade over time. If you have been using yours a whole bunch, you might need to replace it. Luckily they are pretty inexpensive these days.