ntfs-3g no such device or address

[addarich]

I installed all the programs to mount a NTFS partions but im getting the following error
ntfs-3g /dev/sda1 /mnt/windows/
Error opening partition device: No such device or address
Failed to startup volume: No such device or address
Failed to mount '/dev/sda1': No such device or address

my fdisk output is:

Disk /dev/sda: 400.0 GB, 400088457216 bytes
255 heads, 63 sectors/track, 48641 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 26211 210539826 7 HPFS/NTFS
/dev/sda2 26212 26224 104422+ 83 Linux
/dev/sda3 26225 48641 180064552+ 8e Linux LVM

this happends if i use the mount or put the line on the fstab
what could be the problem?

thanks in advance