BTW, the exfat spews an error in the case of iocharset=utf8 such like: exFAT-fs (sdc1): failed to exfat_utf8_to_utf16 (estr:ENAMETOOLONG) nls len : 256, unilen : 256 > 255 I guess this should be downgraded to the debug print; otherwise you can easily flood the kernel log...