If you use Linux and you are looking for a “Wii Backup Filesystem Manager” for Linux, then you need to know Wiithon:
http://blogricardo.wordpress.com/tag/wiithon/
This is the most easy to use and powerful WBFS File Manager for Linux.
If you want to create a WBFS partition, then you need go to Edit Preferences -> Tools & Utilities and click on Format WBFS.
Other option is using linux-wbfs-manager just for create a partition, because it doesn’t have all features wiithon has.
Alan C. Assis 