Terminal commands to mount hda1 in Knoppix
mount /dev/hda1 /mnt/hda1
It is standard for every partition. You need to create a directory in /mnt (used for such purpose) and then mount the device on it.
No need to tell the filing type nowadays as Linux can detect it. If you are required to tell Linux the filing type use "-t" parameter like
mount -t ntfs /dev/hda1 /mnt/hda1
for NTFS partition and use "-t msdos" for fat partitions.
The above is to mount a partition manually. To do it automatically during every boot up you need to edit the file /etc/fstab.