Mounting sda

[newKnoppix]

I have sda drive with 3 ntfs partions (sda1, sda2 and sda3). I can see icons for these on the desktop but when I click on them I was receiving an error message:

Could not mount device
Failed to startup volume: Invalid argument
Couldn't mount device '/dev/sda1': Invalid argument
Mount failed

I tried to mount it manually after reading various forms but am still receiving same message. Any help is much appriciated.

[ekrenmert]

"Could not mount device
Failed to startup volume: Invalid argument
Couldn't mount device '/dev/sda1': Invalid argument
Mount failed "

This error screens on ubuntu 7.04, too. Why? Anyone knows?

[ekrenmert]

Must we install NTFS-3G driver when Knoppix boot?