root@merkez [~]# fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 25 200781 83 Linux
/dev/sda2 26 286 2096482+ 82 Linux swap / Solaris
/dev/sda3 287 60801 486086737+ 83 Linux

root@merkez [~]# hdparm -t -T /dev/sda

/dev/sda:
Timing cached reads: 17948 MB in 1.99 seconds = 8998.37 MB/sec
Timing buffered disk reads: 316 MB in 3.01 seconds = 105.01 MB/sec
root@merkez [~]#