I've got a 2008R2 server I am wanting to upgrade. The only nonstandard hardware without a built-in driver is the Adaptec 1430SA HostRAID controller that it boots from. For this, I have to use the drivers for Windows 7/2008R2 downloaded from Adaptec's website. The only thing Adaptec would tell me is "end of life, not supported, Win7 drivers should work, no new drivers coming, you can pay us money if you want to talk more about it" I have already gone through a testing process of disconnecting the production drives and installing 2012 Server on a new set, providing the RAID driver to setup when it declares it can't find any drives. This works fine and I indeed end up with a running server. Problem is, I need to upgrade. I have already attempted this. It goes all the way through the install, reboots, detects devices, reboots again, and says the upgrade failed. Then it backs it all out and I am back where I started and the server is still running 2008R2. I suspect it is at some point deciding that the Adaptec drivers don't work. Several ideas came to mind: - If I could figure out a way to embed the required drivers into the install image maybe it could succeed at an upgrade. - Is there a way to make it load a driver from external media during the upgrade? - Is there a log file(s) stored somewhere after an unsuccessful upgrade that might give me more information about why it failed? - Worst case, I would have to backup all my data and make a list of all configurations and installed software (good luck!) and then blow the whole thing away and install clean. Any other ideas or suggestions would be welcome.