> You can't install OS with SATA set to IDE, then change it to ACHI without reinstalling the OS, or doing the registry tweak.
That is not entirely correct.
If you know what you're doing, it's possible for FORCE
a change in the device driver from IDE to AHCI,
by using functions within Device Manager.
The OS will complain, but at this point that's GOOD!
After that change, one must immediately re-boot
into the BIOS and switch the mode to AHCI.
Then, the OS should load the AHCI device driver
instead of the former IDE driver.
I've done this with an Intel chipset, and
it worked fine.
Switching from either IDE or AHCI to RAID mode
is not that easy, however, because RAID mode
requires that all component drives be initialized
by the Option ROM (unlike native IDE and AHCI settings).
One approach, that I have seen work, is this:
(0) backup all private data files first, as a precaution;
(1) boot into the BIOS and set RAID mode;
(2) boot into the Option ROM and initialize
all component drives as JBOD (non-RAID);
(3) re-install the OS by choosing the Repair option,
withOUT re-formatting the OS partition;
(4) during step (3) above, use F6 to load the
RAID device driver: for XP, the necessary files
are these:
C:\WINDOWS\system32\drivers\iaStor.sys
C:\WINDOWS\system32\drivers\iaStor.cat
C:\WINDOWS\system32\drivers\iaStor.inf
(5) as soon as step (4) has finished, be sure
to bring all OS files up-to-date by running
Windows Update;
(6) optionally, download from Intel and install
the Intel Matrix Storage Console: this should
come with Intel's latest "Rapid Storage Technology"
aka "RST" version 9.6 (last time I looked).
Google site:www.intel.com "Rapid Storage Technology" +"9.6"
... and find this:
http://www.intel.com/p/en_US/support/highlights/chpsts/imsm
"imsm" is the former acronym for Intel Matrix Storage Manager.
MRFS
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