If grub-probe fails to detect it, then real grub probable won't work with it either. In the current version there's a bug with installing to FAT32 which actually could destroy the filesystem. It's fixed upstream since 2009-07-15, but there's not even a Debian upload which includes this yet.
-- Unable to install grub2 onto vfat partition https://bugs.launchpad.net/bugs/401971 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
