SATA problems (Abit IP35-Pro)

Alexander Sack pisymbol at
Fri Mar 14 20:17:54 UTC 2008

On Fri, Mar 14, 2008 at 1:57 PM, Isaac Mushinsky <itz at> wrote:
> I can install with this AHCI setup, but have no idea what the implications
> are. Is there a known fix for SATA/IDE? Or is AHCI better?

If you can you should set it to AHCI which is a true native SATA mode
instead of IDE emulation.
AHCI is a true SATA hardware interface that exposes a fully featured
protocol stack (NCQ, hot-plug, staggered spin-up etc.).

Without it, you revert back to classical IDE over a SATA phy which doesn't
really slow down the physical connection but adds a lot of driver overhead,
i.e. by treating it as an IDE device, the driver performs a lot of
unnecessary I/O access such as having to select the drive even though its
point-to-point ("serial"), etc.


"What lies behind us and what lies in front of us is of little concern to
what lies within us." -Ralph Waldo Emerson

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