block mount doesn't seem to recognize the file system, but it probably works if you mount it specifically:
mkdir /mnt/sda1
mount -t ntfs /dev/sda1 /mnt/sda1
The main partition may be called sda2 or something else, though. You can find out if you install fdisk and do
fdisk -l /dev/sda
For better performance you should try mounting with
mount -t ntfs -o noatime,big_write /dev/sda1 /mnt/sda1