Ntfsresize

# emerge ntfsprogs

# fdisk -l /dev/hdc

  Disk /dev/hdc: 255 heads, 63 sectors, 2480 cylinders
  Units = cylinders of 16065 * 512 bytes

  Device    Boot      Start    End   Blocks     Id  System
  /dev/hdc1   *         1      2479  19912536    7  HPFS/NTFS

# ntfsresize -i /dev/hdc1
 ntfsresize v1.6.99
 NTFS volume version: 3.1
 Current volume size: 20390432768 bytes (20391 MB)
 Scanning volume ...
 100.00 percent completed
 You could resize at 10196025344 bytes or 10197 MB (freeing 10194 MB).

# ntfsresize -n -s11000M /dev/hdc1
  ntfsresize v1.6.99
  NTFS volume version: 3.1
  Current volume size: 20390432768 bytes (20391 MB)
  New volume size    : 10999996416 bytes (11000 MB)
  Scanning volume ...
  100.00 percent completed
  Updating $BadClust file ...
  Updating $Bitmap file ...
  Updating Boot record ...
  The read-only test run ended successfully.

# ntfsresize -s11000M /dev/hdc1
 ntfsresize v1.6.99
 NTFS volume version: 3.1
 Current volume size: 20390432768 bytes (20391 MB)
 New volume size    : 10999996416 bytes (11000 MB)
 Scanning volume ...
 100.00 percent completed
 WARNING: Every sanity check passed and only the DANGEROUS operations left.
 Please make sure all your important data had been backed up in case of an
 unexpected failure!
 Are you sure you want to proceed (y/[n])? y
 Schedule chkdsk NTFS consistency check at Windows boot time ...
 Resetting $LogFile ... (this might take a while)
 Updating $BadClust file ...
 Updating $Bitmap file ...
 Updating Boot record ...
 Syncing device ...
 NTFS had been successfully resized on device '/dev/hdc1'.
 You can go on to resize the device e.g. with 'fdisk'.
 IMPORTANT: When recreating the partition, make sure you
   1)  create it with the same starting disk cylinder
   2)  create it with the same partition type (usually 7, HPFS/NTFS)
   3)  do not make it smaller than the new NTFS filesystem size
   4)  set the bootable flag for the partition if it existed before
   Otherwise you may lose your data or can't boot your computer from the disk!

# fdisk /dev/hdc

 Command (m for help): u
 Changing display/entry units to sectors

 Command (m for help): p

 Disk /dev/hdc: 255 heads, 63 sectors, 2480 cylinders
 Units = cylinders of 16065 * 512 bytes

 Device        Boot      Start    End     Blocks     Id   System
 /dev/hdc1        *         1      2479  19912536    7  HPFS/NTFS

 Command (m for help): d
 Partition number (1-4): 1

 Command (m for help): n
 Command action
    e   extended
    p   primary partition (1-4)
    p
 Partition number (1-4): 1
 First cylinder (1-2480, default 1): 1
 Last cylinder or +size or +sizeM or +sizeK (1-2480, default 2480): +11000M

 Command (m for help): t
 Partition number (1-4): 1
 Hex code (type L to list codes): 7
 Changed system type of partition 1 to 7 (HPFS/NTFS)

 Command (m for help): a
 Partition number (1-4): 1

 Command (m for help): p

 Disk /dev/hdc: 255 heads, 63 sectors, 2480 cylinders
 Units = cylinders of 16065 * 512 bytes

 Device         Boot      Start    End     Blocks     Id     System
 /dev/hdc1        *         1      1403    11269566    7  HPFS/NTFS

 Command (m for help): w
 The partition table has been altered!

 Calling ioctl() to re-read partition table.
 Syncing disks.