How can I check for and repair bad sectors on my SD card?

To check for and repair bad sectors on your SD card, you can use a disk checking tool on your computer. Connect the SD card to your computer, open the disk checking tool, select the SD card, and run a scan for errors. If bad sectors are found, the tool may attempt to repair them. Keep in mind that repairing bad sectors may not always be possible, and it's recommended to back up your data before attempting any repairs.