check out this kb. it resolved my issue.

http://support.microsoft.com/kb/929550/en-us



"Kevin Spencer" <unclechutney@nothinks.com> wrote in message
news:%23Ux%23fXmLHHA.4912@TK2MSFTNGP02.phx.gbl...
>I found that a tweak of my IDE settings in the BIOS took care of the
>problem instantly. Only took a couple of days to get to that point!
>
> --
> HTH,
>
> Kevin Spencer
> Microsoft MVP
> Bit Player
> http://unclechutney.blogspot.com
>
> Where there's a Will, there's a William.
>
> "William F. Kinsley" <bacardi@noemail.nospam> wrote in message
> news:enpKIMpKHHA.3560@TK2MSFTNGP02.phx.gbl...
>>I have been having the same problems with an external SATAII drive using
>>the the SIIG ExpressCard, using the MS drivers and the SIIG drivers for
>>Vista. It worked fine with XP then the drives just disappeared after I
>>upgraded to Vista. I have posted this issue to the Vista General fourm and
>>on SIIG and still have not gotten a fix.
>>
>> Bill
>>
>>
>> "Gerry" <Gerry@discussions.microsoft.com> wrote in message
>> news:FB1418F2-3ADB-44FF-A46B-4607F96B0344@microsoft.com...
>>>I originally thought that the cause of this problem was with either the
>>> JMicron controller and/or driver.
>>>
>>> So I tried to fix this problem with a SIIG PCIe SATA II controller which
>>> Vista RTM x64 recognized and loaded a driver for.
>>>
>>> Vista still does not recognize my SATA DVD-RW drive (either the Plextor
>>> or
>>> Samsung) connected to the SIIG SATA II controller as a writeable device.
>>>
>>> I can only conclude that the Microsoft Vista RTM x64 CD/DVD driver
>>> cannot
>>> correctlly identify and utilize a SATA DVD-RW device.
>>>
>>> Is there anyone out there successfully writing to their SATA DVD-RW
>>> drives
>>> from Vista RTM x64?
>>
>
>