I am the happy owner of an AR31M, which came pre-installed with Vista. The story below explains how I managed to downgrade it back to XP Pro (UK) and got all devices to work: RAID, S-ATA, Video, Bluetooth, sound, camera, network, etcetera.
What you need before you start:
- The AR31M (in my case with 2x 100Gb S-ATA Hitachi drives)
- An XP Pro full pack installer CDRom
- The AR21M XP drivers
- The AR31M Vista drivers (for the VCC4 camera only)
- A USB floppy disk drive for accessing the RAID & S-ATA drivers during the XP-setup (unless you dare to follow this instruction)
- A floppy disk with the RAID & S-ATA drivers, here's the one I created.
- The NVidia unified GeForce Go driver plus the corresponding *.inf file from http://www.laptopvideo2go.com to make it recognize the AR31M's 7600 version. Here's the one I used.
- Patience.
Assuming a clean install, make sure you've backuped all your important stuff to CDRom.
Step one: install the XP basics
The challenge is to get the XP-setup to load two drivers from one floppy disk, this requires merging the txtsetp.oem files from both the S-ATA and RAID driver. Save yourself time and use the one I made, listed above. The rest is easy: press F6 at the installation start, setup will ask for the disk and assign the two drivers from the menu. Once XP is up and running (in VESA mode) run windows update.
Step two: install the video driver
The XP driver from the AR21M is supposed to work, but it doesn't run stable on (my) AR31M. Alternatively, download the NVidia unified GeForce Go driver instead, place the new *.inf file in the install directory and run setup from there. Note, check http://www.laptopvideo2go.com to make sure you have the right *.inf file.
Step three: sound
Install the audio-hotfix KB835221 from the AR21M audio-driver directory before installing the actual driver.
Step four: install all remaining XP drivers and utilities from the AR21M, except for Bluetooth and the camera
It may be a bit of a puzzle, but simply go through all unidentified devices in your device manager and 'update driver' with drivers from the AR21M XP driver CD. Skip the UGX driver for now.
Step five: Bluetooth
The 'unknown' UGX driver is a really annoying one. It's not recognized by XP and you can't seem to download it anywhere. I found this excellent instruction on how to trick XP into using its own driver & stack (instead of the Toshiba one) which works just as well:
Go to Device Manager and find the "UGX" with the exclamation point, and "Update Device Driver". Tell it you'll find the software, and when it gives up, tell it to show you all hardware available. Select Bluetooth, and then "Alps USB Bluetooth Adapter". Let it install the drivers. After a restart, your bluetooth adapter should be functioning normally, but with the Windows stack instead of the Toshiba one.
But... if Windows won't let you use its built-in driver, go to Device Manager, select the UGX, and go to Properties. Under the Details tab, select "Hardware IDs" in the dropdown box, and copy both of those "Vid\Usb...." strings. Edit the "bth.inf" file in your %windir\inf directory (probably c:\windows\inf), and add new lines under the Sony section, with a name of your choosing and the PnP IDs you copied above. Just follow the same format as all the other lines in the Hardware section of that file. It should be easy enough to figure out. Save it and try the above again.
Step six: the Camera
In the device manager, XP will probably already have recognized the camera as a USB Video device, and it may actually already work fine. But on my system it didn't, whenever I installed the VCC4 driver (from your AR31M-Vista driver CD), the device would fail to start. I found an instruction somewhere on the web (can't remember where exactly) suggesting this could be because of faulty power handling at USB-hub level. To bypass this, go to you Device Manager, click view-by-connection and the find the USB Hub to which the Video USB device is connected. Open its properties, click the Power Management tab and then uncheck the option allowing windows to switch the device off. This worked for me.
Step seven: the missing memory stick icon
The annoying 'blank' memorystick icon... luckily there are people on the web looking into stuff like this and publishing solutions. It's actually quite simple:
Copy snymsico.dll to your C:\WINDOWS\
Edit registry (run > regedit): HKLM > Software > Microsoft > Windows > CurrentVersion > Explorer > AutoPlayHandlers > DeviceGroups > MemoryStick
Set Icons to %SystemRoot%\snymsico.dll,0
Set NoMediaIcons to %SystemRoot%\snymsico.dll,1
What this does is, gray out the memory stick icon when no media is inserted, then when a memory stick is inserted it changes the icon to blue.
Step eight
Enjoy your awsome AR31M, in a clean, lean and mean XP environment (and forget about Vista).
Costas
i follow the instructions,i do the stuff with the floppy, but it keeps asking for SILICON IMAGE sil 3132 SATALINK DRIVER CONTROLLER INSTALLATION DISC. please some help im desperate!
I am having the same problems. Did you manage to resolve this?
i follow the instructions,i do the stuff with the floppy, but it keeps asking for SILICON IMAGE sil 3132 SATALINK DRIVER CONTROLLER INSTALLATION DISC. please some help im desperate!
I am having the same problems. Did you manage to resolve this?
The same problem!!!
Anybody solved it ???
Costas ! Answer please!
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Newton_AR-31 Moscow, Russsia
why dnt you just install XP PRO AND VISTA ON THE SAME HARD DRIVE 
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