Mirror display on dual head - GeForce 9800 GT

Hello everybody, a quick question for you:

Please correct me if I'm wrong, but on dual head video cards, and specifically mine: a GeForce 9800GT there is one "head" which is the primary one and the second one which is "enabled" by the OS only.

If what I'm saying above is right, you need to connect the monitor to the primary one to be able to see the POST information when the PC is booting up, as the secondary is not enabled.

Now, is there any way to mirror the output of the POST (pre-OS) on both head?

The reason why I'm asking is because I have a monitor and a belkin Omniview to do BIOS level remote administration via IP.
So I'd like to use the secondary head for the Belkin that's all.

Thanks!
rs232

As the monitor is DVI and the Omniview VGA, the only alternative I've found so far is to use a cable like this:

ebay item: 360159613396
Male DVI-I to Female DVI-D & Female VGA Video Splitter

But I'm worried about loosing video quality on the monitor that's why I would prefer to use both heads on the video card instead.

Regards

typically yes, only 1 display output will be fully functional on most graphics cards. Im not entirely sure at this point if that is a limitation of the boot rom on the video card or a driver related issue (and the driver doesn't load until the OS boots). But yes if you use a splitter cable off a single head, you could have identical images on both monitors connected to that splitter, you could not have each monitor act independently. Honestly I have lost touch with multimonitor set ups using old methods since the rise in high quality large format displays (like the 2560x1440 27" or 2560x1600 30" units) or the easy to use Eyefinity. Perhaps someone else has some useful input?

You will lose some level of quality depending on the resolution but typically this is manageable with a decent splitter, especially if it is mostly low color palettes used in these low level management applications.

But if the system has a dedicated remote access card then you will be able to do all this properly via remote management software. What exactly is your setup and what are you trying to accomplish?

Hello, thanks for the answer!
Here is the score: The PC is actually my mother one who lives in a different country. I do most of the administration stuff for her remotely (she's not a techie ;-)) using windows remote admin software such as teamviewer or similar. However it did happen few times to have some boot problem so I bought a Belkin Omniview which gives me full control on the PC over IP even if this is not booting up (e.g. broken HD or what so ever). The challenge I have is:
There is an internal VGA video card but also a GeForce 9800 installed on the PCIe slot which (of course) I prefer to use due to the large monitor in use. This monitor like the 9800 is DVI only where the Belkin is VGA only. The BIOS is set to use PCIe over onboard video card.

Your answer makes lot of sense to me but can I ask a clarification? Why does a splitter make you loose quality? I thought VGA is analogic where DVI digital.
So if I go from DVI to DVI I would't expect to lose quality where if I plug on the same connector on the VGA end... than yes!
Any ways, mine is a question as I think I still haven't mastered the DVI to VGA adaptor functionality yet. Is this just a socket converter or is there any circuit inside to transform from digital to analogic?
In either cases I don't see why I should experience a loss of quality on the DVI end. Thanks for the clarification!

Thanks again!