Q:      AHCI?
A:     . ,      
   Windows          AHCI
    BIOS-        .
     AHCI    .
       HDD  SSD    AHCI  
    .

/  AHCI  Windows Vista/Seven x86/x64 ____INTEL_.
1.  uVS    ""->"[INTEL]   AHCI...". (/ )
2.  .
3.  BIOS-   AHCI _  .

Windows XP/2k3 x86/x64.
1.   "Intel Rapid Storage Technology F6 Driver Diskettes"
           Intel.
   (f6flpy-x86.zip  f6flpy-x64.zip)

           Gigabyte   ,
       "Intel SATA Preinstall driver (For AHCI / RAID Mode)"
   (  WinXP x86  mb_driver_intel_bootdisk_irst_32_xp_6series.exe).
           .

2.  .
3.  uVS    ""->"[INTEL]   AHCI...". (/ )
4.        .
5.  .
6.  BIOS-   AHCI _  .