os supporting sd card read and write

Mac OS X as well. There's an official SD card formatting tool, which formats the card correctly according to the specs.

On a Mac, you would probably want an SD-to-USB adapter (they cost $1, but not all of them are good, so I recommend buying a few different types).

Mac OS X as well. There's an official SD card formatting tool, which formats the card correctly according to the specs.

On a Mac, you would probably want an SD-to-USB adapter (they cost $1, but not all of them are good, so I recommend buying a few different types).