root@bt:~# sudo swapoff -a
root@bt:~# sudo parted /dev/sda
GNU Parted 2.2
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) rescue START END
Error: Invalid number.
(parted) print
Model: ATA ST3500418AS (scsi)
Disk /dev/sda: 500GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End    Size    Type      File system     Flags
 1      32.3kB  107MB  107MB   primary   ntfs            boot
 2      518MB   250GB  249GB   primary
 4      250GB   360GB  110GB   extended
 5      250GB   355GB  105GB   logical   ext4
 6      355GB   360GB  4498MB  logical   linux-swap(v1)
 3      360GB   458GB  98.9GB  primary   ntfs

(parted) rescue 518MB 250GB
(parted)