After 10 installations trials and dozens of thread read I figured I would need some help.
I just built a mining rig (for litecoin) with these:
1 ASrock 970 Extreme 4
4 Gb Ram
1 Processor AMD Sempron 2,8 GHz
3 Gigabyte Radeon R9 290
1 Blank 8Gb USB stick
1 Live USB for Xubuntu 13.10
I won't got through all the trials and error before getting to the end of the installation without a bug, so here where I'm stuck at:
My motherboard can't allow install in legacy mode, so I successfully installed xubuntu 13.10 having partitioned the USB stick with
100mb of EFI boot
7,4 Gb for /
So when I reboot, the boot hangs to a black screen (no cursor) just after the BIOS screen.
So I as explained in multiple forums, I reboot on LiveUSB and launch boot-repair. It tells me that it detected a winEFI, would I like to activate ? Of course yes. And boot repair finishes.
From here I'm almost convinced it should work.
I reboot pressing F2 to enter UEFI. I see in my boot order choices that I have a media called Ubuntu. (Sounds good)
But after saving the changes and exiting I don't see any grub... I press enter just to see what happens and at the moment I press the button I see the grub flashing and disappearing right away. Then PC hangs to black screen (still no cursor).
Great! I should get it to work with
radeon.modeset=0. So I try that at the second reboot (this time the grub appeared immediately). And I wait with hope for the black screen to turn into the Xubuntu splash screen...
No luck. So I reboot to try to launch Ubuntu in recovery mode. But the system didn't let me, on this boot and the 3 to 5 I did after that, I couldn't boot anymore. My grub was lost. My computer either hangs on the BIOS splash screen or won't recognized my "Ubuntu" media anymore in the UEFI Boot option. It will now say UEFI - VERBATIM 8GB ...
So what am I supposed to do here? I'm open to any advices.
I'm starting to think, maybe my USB stick is broken? (I once got the problem with a LiveUSB, couldn't pass the GRUB or no workaround worked)
Or is something wrong with my install/boot-repair?