I can not boot my mac pro 5,1 while holding Option key

Hi,
I have a mac pro 5,1 (3.33 six cores, 10.9 OSX) running a RAID 0 on a Sonnet Technologies PCI-E Tempo SSD Pro with two Samsung 840 pro 256GB.
I would like to reinstall from a USB or recover the machine so I restarted it while holding the Option key.
It did not work. What I have is just a white screen with the mouse pointer (arrow). I tried many time but nothing change.
I restart with pressed C key, Command+Option+R....: nothing works. I reinstalled by downloading a fresh copy of OSX 10.9 but nothing helped.
So I post here in order to get solutions from the experts.
If you know what to do for my case then please help me out.
Thanks and regards,
nhvma

installing OS X to a PCIe controller often won't work. What does:
Install to a drive on SATA 2 bus, then clone it over to your RAID. And create the RAID with 10.9.
Personally I have yet to read, hear of or experience in years that booting from arrays really helps. Larger volume yes but a single SSD is fine. Even putting one like yours on the SATA II bus and use the PCIe card for graphic library, for scratch, other uses where it does help and matters.

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I can not boot my mac pro 5,1 while holding Option key

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