sudo fdisk -l

Disk /dev/sda: 40.0 GB, 40007761920 bytes
255 heads, 63 sectors/track, 4864 cylinders, total 78140160 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xd2a90c07

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048    74810641    37404297   83  Linux
/dev/sda2        74848256    78139391     1645568   82  Linux swap / Solaris
/dev/sda3        74814705    74846834       16065   ef  EFI (FAT-12/16/32)

Partition table entries are not in disk order