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 / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x7613566f

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048    58593279    29295616   83  Linux
/dev/sda2        58593280   197410815    69408768   83  Linux
/dev/sda3       197412862   431814655   117200897    5  Extended
Partition 3 does not start on physical sector boundary.
/dev/sda4       431814656   976773119   272479232   83  Linux
/dev/sda5       211816448   411813887    99998720   83  Linux
/dev/sda6       411815936   431814655     9999360   82  Linux swap / Solaris
/dev/sda7       197412864   211816447     7201792   82  Linux swap / Solaris

Partition table entries are not in disk order