Da uma olhada no seu /etc/fstab se as duas particões ntfs estão com as opções iguais...
Tipo:
# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/hda1 UUID=d1662736-3751-4b35-8cb5-4b92e00c3dbf / ext3 defaults,e$
/dev/hdb1 UUID=b432c1c4-fbc9-4dc6-9af7-d634ccb68280 /home reiserfs defaults $
/dev/hda2 UUID=78C07A6DC07A320C /media/WinXP ntfs-3g silent,umask=0,locale=utf8 0 0
/dev/hda3 UUID=18Cf7A6-C07-320C /media/ArquivosWinXP ntfs-3g silent,umask=0,locale=utf8 0 0
/dev/hdd1 UUID=ea49e391-c412-4796-a03b-5612586e5b1d /media/Ficharios reiserfs notai$
/dev/hda5 UUID=3eda05a6-34a1-4cd9-b680-0bec0691e17f none swap sw $
/dev/hdc /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/ /media/floppy0 auto rw,user,noauto 0 0