(parted) print
Disk geometry for /dev/cciss/c0d0: 0.000-7153727.617 megabytes
Disk label type: msdos
Minor    Start       End     Type      Filesystem  Flags
(parted) mkpart primary 0Mb 2000000Mb
(parted) print
Disk geometry for /dev/cciss/c0d0: 0.000-7153727.617 megabytes
Disk label type: msdos
Minor    Start       End     Type      Filesystem  Flags
1          0.031 1999998.369  primary
(parted) mkpart primary 2000000Mb 4000000Mb
(parted) print
Disk geometry for /dev/cciss/c0d0: 0.000-7153727.617 megabytes
Disk label type: msdos
Minor    Start       End     Type      Filesystem  Flags
1          0.031 1999998.369  primary
2     1999998.369 3999996.738  primary
(parted) mkpart primary 4000000Mb 6000000Mb
(parted) print
Error: Unable to satisfy all constraints on the partition.
(parted) quit