SATA PCIe controller not working in BIOS

SoNic67

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Jun 9, 2012
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Anyone was able to boot from a PCIe SATA adapter on a Dell Precision T5500 board with A18 BIOS?
I have two SATA controllers, both based on ASMEDIA 106x controller, one PCIe 1x and the other 4x, plugged in the 8x port. During BIOS sequence, their firmware code appears on the screen with "can't find any device", even if devices are connected to them.

However, once Windows booted up, I can see the controller in Windows devices, and even an optical drive connected to it.

I have to mention that I have already a bootable RAID card, but I can't boot from it with the SSD without "initializing" it. That means erasing it. Maybe that's the problem, cannot be two bootable PCIe cards?

Any ideas?

 

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