I have a 2GB SD card that was reportedly unreadable on several digital cameras and computers, and I need to get data from it. When I put it in my Mac using a card reader and check Disk Utility or use
diskutil list, it shows up as a 32.1MB disk with no partition map after a long delay. No volumes show up, of course. When I put it in my Debian computer, it isn't mounted, and I also have no idea what its equivalent of
diskutil list is.
Because I need to get data from it, I can't repartition it. How do I repair the disk? It's /dev/disk9 on my Mac, and I also have the Debian machine at my disposal.