Installing Displaylink driver on another system HD

[sultanmakende]

Yes that was the issue - OS / hardware incompatibility that I suspected would happen.
And indeed, getting the DL to work on the Macpro was only to confirm that it is indeed a video card problem, before I splash out on a replacement.
I will just go through the exact symptoms below to get any opinions if my diagnosis of faulty video card is correct:

1.Press start button and familiar chime
2.Apple logo appears.
3.Rotating progress ring for about a minute or two below apple logo.
4.Progress ring stops, screen flashes and goes totally white, then nothing more.

I have also verified the HD, no problem there, and the above also happens even if i try booting/re-installing from a bootable pendrive installer.

My theory is that the video ram on the video card is burned, but as I said I wanted to eliminate all other possibilities before buying an new card and the DL option was one way of doing so, if I could only get the driver on to the Macpro's boot drive!
I wish the developers at DL would find a way to allow installing the DL driver on to an external boot HD.
Once again, thanks for your input!

[saudor]

There are guides out there that should force installation of OS X on unsupported hardware. After all, I even got Mavericks running on an AMD windows PC. I think there is an ongoing thread on macrumors concerning the mac Pro 2006 and El Capitan. (Mavericks should definitely be possible)

The hackintosh forums are a good resource to get non Mac graphics card working with OSx. (These tend to be cheaper). I hear the ATI 5770 (I picked one up for $20 used a year ago) is pretty easy as macs actually use the card.

Do you have access to a PC that you could place the card in? Or even another Mac. The former might prove difficult if the firmware on the card pertains to a mac

Do you get the same symptoms from a snow Leopard installer? But sounds like a graphics issue.

[alphadog00]

Originally Posted by sultanmakende

Yes that was the issue - OS / hardware incompatibility that I suspected would happen.
And indeed, getting the DL to work on the Macpro was only to confirm that it is indeed a video card problem, before I splash out on a replacement.
I will just go through the exact symptoms below to get any opinions if my diagnosis of faulty video card is correct:

1.Press start button and familiar chime
2.Apple logo appears.
3.Rotating progress ring for about a minute or two below apple logo.
4.Progress ring stops, screen flashes and goes totally white, then nothing more.

I have also verified the HD, no problem there, and the above also happens even if i try booting/re-installing from a bootable pendrive installer.

My theory is that the video ram on the video card is burned, but as I said I wanted to eliminate all other possibilities before buying an new card and the DL option was one way of doing so, if I could only get the driver on to the Macpro's boot drive!
I wish the developers at DL would find a way to allow installing the DL driver on to an external boot HD.
Once again, thanks for your input!

Is the mac seen on the network? Can you ping it or see the machine from another mac? If not, then I would say it is more then your video card. From step number 4, I can't tell if it has finished booting or not, but I suspect it has not and you have either corruption on your hard drive or some other hardware failure.

If it were video card, I would expect to see no display at all. Try rebooting in verbose mode and/or single user mode to see what is loading and where it fails.