I have an external USB hard drive that I'd like to format to UDF for cross-compatibility with Windows and Macs. I tried exFAT, but for whatever reason, because of the block size (56KB) of the format, it's eaten up a huge portion of the disk space (~400GB actual data, ~900GB used disk space).
Is there a utility on Mac OS X to format hard drives to UDF?
I can't find any built-in to my version (OS X 10.8.2), and
mkudffs doesn't appear to be in my
$PATH, so I'm not sure where to go from here.