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Acer Aspire S7-391 I'm STUCK: Win8 + UEFI + RAID + Secure Boot + Fast startup

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The beautiful new ultrabook is a Microsoft trap. Please help me have dual boot for Windows 8 and Ubuntu.

I tried installing Ubuntu with this guide https://help.ubuntu.com/community/UEFI by resizing in Windows the partition, then going in the Bios and turning off UEFI. I tried to turn off Intel SRT in the bios but it did not seem to work, anyway I kept on installing Ubuntu and chose the "something else" option, selected just /sda as the boot partition and in the end it said I either had to erase something or not install the bootloader.

Needless to say Ubuntu or windows did not load, so I installed and tried Boot-repair, did all standard and no success.

I turned on UEFI but still windows or Ubuntu would not load, I reinstalled Ubuntu in UEFI and selected this time the UEFI partition for boot. After the install of course the system would not load, just a "no system available please reboot" or something like that.

I retried boot-repair, this time with UEFI, but after it says all is cool, the system is still not recognized and nothing can be booted.

The log is this http://paste.ubuntu.com/6038259/

What should I try ? How do I disable the raid? Do I have to cancel windows?

The ultrabook has of course no CD (it's 2013 for god's sake) and no windows 8 cd came, how do I make a USB backup or recovery if I can't boot in windows? If I don't have a recovery usb I can't erase the disc and install Ubuntu overall.

Please help

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