Darn it... I wish I had stumbled upon this thread before taking the plunge....
I was going to ditch my old Mac Pro 2008 (3.2 eight core, 32 GB RAM, Quadro 5600 FX) and get a new Mac Pro (2nd Gen) when it comes out. While waiting, I decided to do some upgrades and decided to go with the Sonnet SSD Pro with two 500 GB EVO 850. Bought an extra 250 GB EVO 850 for Windows 10 to put in bay 1. Bay 2, 3, and 4 I kept the old 1 TB drives and configured it as RAID 0 and installed 10.11 (which sucks, especially Disk Utilities, had to boot with 10.10 to configure RAID).
Long story short, I had to yank out the Sonnet card to install Windows 10 on the SSD in the internal bay 1. Once I put the Sonnet back, Windows won't boot. I saw that some other folks here had the same problem and decided to send the card back and go with the Apricorn DUO. For me, I simply don't want the hassle of returning it because it works great with OS X. So my question is:
1. Is there a way to fix this? (To boot Windows off the drive in Bay 1)
2. If #1 is not possible, can I get another PCIe card just for booting Windows and works with the Sonnet? I don't mind holding the Option key during boot
3. What should I get? The single Sonnet, Solo x2 or Duo x2?
4. Slot 1 & 2 is already taken (by the video card and Sonnet), will doing RAID 0 on the Duo x2 be futile since the bus speed on slot 3 is not as fast as slot 1 & 2?
5. If the bus speed is limited, then would it make sense just to get the Solo x1 and save on the cost of the card? I don't mind paying more if is makes sense to do so.
Many thanks!