How do you reformat a SanDisk on a mac?

To reformat a SanDisk on a Mac, first, connect the device to your computer. Then, open "Disk Utility," which you can find in the Applications > Utilities folder. Select the SanDisk from the list on the left, click on "Erase" at the top, choose the desired format (like exFAT for compatibility with both Mac and Windows), name the drive, and click "Erase" to complete the process. Ensure to back up any important data beforehand, as formatting will erase all content on the drive.