Strangely enough, if you look at the rev 3.3 DS3's owner's manual, this BIOS setting is not even included/shown. The discussion about the BIOS options available on the
Integrated Peripherals menu simply starts with
SATA port 0-3 in my DS3 user's manual.
If I enable this setting, then during the POST process the following additional messages appear
Serial ATA AHCI BIOS, Version iSrc 1.07 08042006
Copyright (c) 2003-2006 Intel Corporation
** This version supports only Hard Disks and CDROM drives. **
Please wait. This will take few seconds.
The AHCI BIOS then detects and list the hard drives attached to my Intel SATA ports and boots windows. Windows then tries to start but takes a "blue screen" error that immediately triggers a reboot. Most likely the error when starting windows stems from my not having installed the Intel AHCI driver. I've read that you can "trick" Windows into installing this driver, but don't know if doing so really accomplishes anything useful.
As I said before, I'm not sure this option is really supposed to be available on a DS3/S3. You certainly don't seem to be able to do anything useful with it. About the only thing I'm sure of is that this BIOS option concerns the AHCI for the
Intel SATA ports. The Gigabyte/JMicron ports have separate BIOS settings (see below).
2. SATA port 0-3 Native mode
This setting seems to pertain only to the four Intel ICH8 SATA ports. The best guess I've been able to come up with about what "Legacy IDE Mode" and "Native IDE Mode" may refer to is what is talked about in this Microsoft article:
BIOS Settings for Native-Mode-Capable ATA Controllers. I only glanced at the article, but perhaps the reason changing the setting seems to have no effect is because Windows XP may switch the controller from Legacy IDE mode to Native mode. :? Or I could also be totally off in the wrong direction here ...
3. Onboard SATA/IDE Device
4. Onboard SATA/IDE Ctrl Mode
The user's manual pretty clearly states that these settings for the "Onboard SATA/IDE" only affect the Gigabyte/JMicron controller. You can also verify this by looking at how the
Standard CMOS Features BIOS menu changes. When
Onboard SATA/IDE Device is Enabled, the following six entries appear in the
Standard CMOS Features BIOS menu.
IDE Channel 0 Master
IDE Channel 1 Master
IDE Channel 2 Master
IDE Channel 3 Master
IDE Channel 4 Master
IDE Channel 4 Slave
IDE Channel 5 Master
IDE Channel 5 SlaveWhen
Onboard SATA/IDE Device is Disabled, all you get are the following four entries corresponding to the four Intel SATA ports.
IDE Channel 0 Master
IDE Channel 1 Master
IDE Channel 2 Master
IDE Channel 3 Master
-john