Hope you resolved this by now.
Thought I would add this for anyone else looking for this subject.
It worked for me. I'm running in RAID/AHCI mode and no HDD in RAID. External HD on eSATA is now hot plug and unplug-able (no 'safely Remove Hardware' though).
Joined on 02/15/2005
Re: SATA II
08 Jul 2008 10:35PM
Here's what I did to enable AHCI/RAID mode on my Inspiron 530 (Q6600, Vista SP1, single drive):
After the computer starts up in AHCI/RAID, you can install the Intel Matrix Storage Manager Console application (R154079.EXE). You don't have to setup a RAID volume; the Storage Manager Console will show the hard drive as a non-RAID volume.
After a couple of days I had a forced shutdown error. It was the RAID driver so I downloaded the 184.108.40.2069.exe from the Intel website, just click on it, answer all the questions, re-boot and everything is working. I did notice that everything seems to be running a bit faster now!
Hope this helps,
Inspiron 530s, Intel Core2 E7200, 6 GB DDR2 800MHz, 500GB SATA II 7200RPM, 22" Widescreen LCD w/2 MP Webcam,Radeon HD4650, Windows 7 Ultimate 64bit, eSATA port