Try create partitiomn using knoppix cd first.
So i hit ENTER and the next message reads "Fatal Error: Cannot read disk drive press any key to exit cfdisk". I dont know the problem
The above error occurs when you try run cfdisk in user mode.
Probably the hardisk is already partitioned, make sure you unmount all the partition first.

Lets do the installation step by step ( if you want knoppix to be the only OS in that hdd):
1) Boot knoppix cd......until you represented with KDE .
2) Click konsole at the left bottom of taskbar ( tv icon )
3) Type these command in that konsole:
su **you will get something like: root@ttyp4[knoppix]# **meaning now you are root.
cfdisk

**cfdisk menu will appear. Create partiton of your choice. Knoppix needs 2 partition : 1) Linux swap(82) = 250-500MB 2) Linux partition(83) = the rest of free space . Flag linux partition to Bootable. Then Write ....and quit from cfdisk.
4) Still in root, type : knoppix-installer **just follow instruction**