The best way to clear an SD card is to format it, which is like hitting a factory reset button; it'll erase every file, ...

You can move pictures to an SD card using a PC, Mac, or Android phone, as long as you have the right card and equipment.

If your SD Card is not detected in the Device Manager, then this post will help you. This issue can occur due to hardware issues, outdated or corrupted drivers, faulty SD Card, faulty SD Card reader, ...