它是这样说的：
Error mounting /dev/sdc2 at /media/sudheer/Untitled:
Command-line `mount -t "exfat" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000,
iocharset=utf8,namecase=0,errors=remount-ro,umask=0077" "/dev/sdc2"
"/media/sudheer/Untitled"'
exited with non-zero exit status 32: mount: unknown filesystem type 'exfat'