I often use movable disk (USB) to change data between different OSs, almost four kinds -- Linux, Windows, Mac OS X, FreeBSD. Obviously, VFAT is supported in all kinds of OSs. But the short is: It cannot preserve common UNIX attributions, such as ownership, privileges. NTFS is writable using FUSE under Linux and Mac OS X, seems not writable under FreeBSD. Ext2 is accessible under Windows using tools (e.g. ext2fsd), how about it under FreeBSD and Mac OS?
Candidates: Ext2? NTFS? VFAT? It seems Ext2 is good. Any other candidate?