I have run `sudo fdisk -l`

and have got the following information:

```
Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
```

This utility shows the whole size of the hard disk (`120034123776 bytes`

) and its number of heads (`255 heads`

), sectors per track (`63 sectors/track`

) and number of cylinders (`14593 cylinders`

).

Multiplying heads X sectors per track X number of cylinders we must have number of sectors in the disk.

```
255 X 63 X 14593 = 234436545
```

Having in mind that every sector is of size 512 bytes, we have

```
234436545 X 512 = 120031511040
```

In fact, `120031511040 != 120034123776`

, therefore, the question is: does *fdisk* shows incorrect information or there is something that I have missed in my calculations?