Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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: 0xc4db82ba

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1              63        2047         992+  42  SFS
/dev/sda2            2048    25167871    12582912   27  Hidden NTFS WinRE
/dev/sda3   *    25167872    25372671      102400   27  Hidden NTFS WinRE
/dev/sda4        25372672   598728703   286678016   42  SFS