How does the computer change the hard disk mode into AHCI mode matching WIN8 system

How does the computer change the hard disk mode into AHCI mode matching WIN8 system

1, restart the computer or turn on the computer, and then in the boot screen when the corresponding shortcut key to enter the BIOS Settings window, in the BIOS Settings window using the keyboard key to select "Config" option, and then select "Serial ATA (SATA)", press ENTER to confirm;

2, open serial ATA (SATA), you will see "SATA comtroller mode option [Compatibility]", press ENTER to select it;

3, at this time will pop the selection window, we will switch its mode to "AHCI", press the ENTER key to confirm;

4, after the mode switch we can see "SATA comtroller mode option" after the parentheses are changed to "AHCI";

5, the operation to this we will be the hard disk mode into AHCI mode, and finally press the F10 key to save just the settings and exit the BIOS settings, this time we can install the WIN8 system.