single SATA disk and yet identified as 'ad4'

[Tim Kientzle]

Saifi Khan wrote:
> 
> The system has just one SATA disk and yet bootloader process
> identified it as 'ad4'. Ideally, it should be ad1.
> 
> 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
> 00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 01)

The ide interface gets ad0, ad1, ad2, ad3,
the sata controller numbering starts with ad4.

Tim