Hi, thanks for the response. Not sure if I want to put that much effort in at this time, especially since it would risk putting my fully functional system in a bit of a comatose state. I'm just frustrated since I only need it to write the boot loader to the SCSI drive, I don't care if it doesn't recognize the HD or burner attached to the 29160 in Win 7. I'm pretty much done with SCSI at this point anyway so I don't want to put any more money into SCSI cards or the like. (my next build will be SCSI-free, and this computer is getting up there in years from back when a 29160 +15K RPM drive was pretty awesome.

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I did find this, which seems to be bad news-- Adaptec does not look to be planning Ultra160 SCSI support for Windows 7 (I swore I read it WAS supported-- although it says updated July 2, 2009 so maybe they changed it?):
Answer
I am going to email them to complain; after all, the card is NOT listed as End-of-life (as many supported cards are!) and still available on their website for $329. Seems hard to believe when it has functional Vista
drivers available that they can't just at least do a small tweak and release "unoptimized"
drivers at some point.
Anyone else having issues with the Ultra160 cards should email as well, they may change their minds if they see the cards are still in use.
I did try to install Vista x64 and upgrade from there and it still choked at the 29160
driver. I don't know even if I found a way around the bootloader issue if it'd be an issue having the card plugged into the system. Not sure if it's worth trying to a 32-bit Vista->Windows 7 upgrade since it sounds like a few people have had small successes with that.
(Edit to add, just got a response from Adaptec that they will pass my concerns on to the engineering department but aren't making any promises...)