I used my CompactFlash card as a boot drive to install Snow Leopard for my laptop a while ago. To do that I had to repartition it to HFS+ with a GUID partition table.
When partitioning it back to MBR with FAT32, something failed and now the card is unreadable. When I insert it into the reader it just reads the card and never stops or mounts anything. In Disk Utility it's not appearing either.
Any ideas on how I could possibly rescue the card?
Solutions for Mac OS or Windows are welcome.