Windows 10: Inaccessible usb3 boot device

Been working on this for weeks to no avail. I have Win 7 on on ssd and Win 10 on another ssd. I am not dual booting but switch to the drive I need in the bios. Using Casper 8.0, I clone the Win 7 and Win 10 to backup internal ssds. These internal backup drives have no issues booting. I also clone the Win 7 and Win 10 to LaCie usb3 thunderbolt ssd drives. This is where the problem starts
The Win7 has no issues creating a bootable usb3 backup.
The Win10 will not create a bootable usb3 backup.
When trying to boot to the Win10 usb3 drive, I get the "inaccessible boot device" error then a restart.
I have tried just about everything I can find but nothing fixes the issue.
Any suggestions?
Ron

:)

 

blue screen unacessible boot device--

I installed windows 10 and it now will not boot. It said inaccessible boot device and restarts itself and just keeps going back to inaccessible boot device

 

Inaccessible boot device

Date: Sun, 9 Aug 2015 14:19:33 +0100
Hi Santosh, I'm sorry but I'm lost already because I have 3 computesr ,the one I have that has the problem and had upgraded the win/10. 2.. one is running win/7 but the problem is the keyboard had coffee spilt on it and when it speeds up, if doing more
than one thing, it ends up going++++++++++++++ , so writing on to a dvd from it is problematic, and that's before the product key thing as I can not remember or even know where or if I can find each different one , I guess what I'm saying is that doing this
possibly beyond me as I have three computers two upgraded to win/10 ok, my other one is the one with the strange key strokes (I guess windows would have upgraded already as they did my other two (one which is now in the loop of trying to restart saying inaccessible
boot device) so is there another way of just putting a disc into my good win/10 and just copy on to disc the other one, and sort it out once I have access into computer, (I do have that reg key as it's underneath stuck to the base of my computer) Please
believe me I am pretty disabled in the reasoning and understanding front hence the mess with my computers, unless you know a more simpler way to do this, (I'm hoping you do) but please forgive this problem as it may just be unsurmountable, but I do hope
not as it is my main computer and cost me a lot and living on disability does not leave much over financially for me to solve it by throwing money at it(ah but to be bloody rich) I will await your response with trepidation best wishes Alex

Alexander MacDonald

 

Ok, finally isolated the problem. The bootable usb backup will work on usb 2 but not on usb 3. Now, just got to figure out why the Casper8/Win10 combo does not like usb3.
Ron

 

Contacted online Gigabyte support before I installed 10 quite some time back and asked if my H67A-UD3H-B3 supported Windows 10 as I was having far too many issues. They assured me it was and the process to fix the usb issue began. Thru out the entire process, I had to constantly remind them of the issue as they would be out in far left field with suggestions that did not even pertain to my issue. Today I finally called US Support and was told that my board DID NOT support Windows 10. So much for their online tech support! Guess it is back to 7 on this computer!