Mac terminal: operation not supported

[absolutely]

I'm trying to convert my iPod to FAT32 so I can do the bootloader.  My iPod is unmounted.  I've followed all the instructions.  I get to where I do the thing in terminal, and I get this:

hambot:~/desktop blc9$ sudo dd if=mbr-video80gb-2048.bin of=/dev/disk2
Password:
dd: /dev/disk2: Operation not supported

What am I doing wrong?

[GodEater]

Are you logged in as root ?

[absolutely]

I don't think I am.  I'll try that.  Thanks!

[kevlarcupid]

You shouldn't have to log in as root, but either sudo or use an account with admin privs.