How do I install Linux Mint 17 from USB on Flex 10?

Question

Hello everybody,
I want to install Linux Mint 17 on my Lenovo Flex 10 device.
I tried to make two different bootable installation USB sticks using the Rufus software but when I try to boot from them, the boot menu show only Windows. It seems that Flex 10 doesn't like my USB sticks. One is former Mandriva USB, the other is ADATA S102/8GB USB 3.0. Should I try another USB stick?
I've read several threads relating to this; someone suceeded, more people didn't get any answer.
One suspicious thing is that Rufus says that I need an EFI ISO image when I choose the UEFI MBR or UEFI GPT partition scheme. Isn't the Mint ISO an EFI ISO image? So the only option that remains is "BIOS or UEFI" scheme. I think that should work but it doesn't. They say that Mint 16 already supports UEFI. So Mint 17 should too.
Other thing is that there might be an issue with 32/64bit UEFI. How do I switch between 32 and 64 bit UEFI?
Am I missing something? What am I doing wrong?
--CIgydd Bach
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Answer 1

So I'm going to answer my question myself. * Edit: An ironic note to Lenovo removed. They don't deserve it. *
For everybody who wants to boot or install Linux to Lenovo IdeaPad Flex 10:
Flex 10 has a 64-bit processor but a 32-bit EFI (UEFI) firmware!
Therefore I guess most of us have 32-bit Windows pre-installed for it.
Because Microsoft is so poor that they cannot provide us with a 64-bit system with a 32-bit bootloader. Oops, they cannot provide Lenovo with that combination.
And Lenovo, you guys prepared me a hell solving the riddle why only my Flex 10 doen't boot Linux, neither 32-bit distros nor the 64-bit ones.
* Edit: Not removing this one. Yes, you prepared me a hell but it was also a big fun solving the riddle. *
Because the 32-bit distros don't count with UEFI at all (they suppose older firmware, so called BIOS) and the 64-bit ones don't count with a 32-bit UEFI.
So I had to download a bootloader one guy precompiled for others to boot the USB with the installation ISO image for Ubuntu 14.04 64-bit. Here is the bootloader file:
https://github.com/jfwells/linux-asus-t100ta/blob/master/boot/bootia32.efi
The next post was very helpful to me. There I discovered that I have to download or compile a 32-bit UEFI bootloader:
http://forums.lenovo.com/t5/Linux-Discussion/Flex-10-the-installation-of-Linux/td-p/1516596/page/2
And here I finally followed the instructions how to boot to the USB stick and it helped me a lot in the overall process and progress:
http://www.jfwhome.com/2014/03/07/perfect-ubuntu-or-other-linux-on-the-asus-transformer-book-t100/
There you will see that you have to follow these steps:
Shrink your C drive in Windows and create a new partition to be deleted and re-used by Linux (Windows doesn't like surprises).
Turn off the Windows Fast Boot option (or Windows could damage your Linux partitions). 
Compile or download (see above) a bootloader for the USB stick.
Boot the stick, make sure the live image runs.
Run the installation from the live system and install your Linux to the space you created previously (by deleting the new partition and creating root, home and swap partitions there).
Boot to the newly installed system using the USB stick (you still aren!t able to boot to Linux from disk).
You can skip the step of compiling WiFi drivers. On Flex 10, they work perfectly out of the box.
Following the instructions on the last linked page, compile Grub for 32-bit EFI and install it onto your disk. Here I suggest a slight change against the instructions. Don't name the compiled Grub "grubx64.efi" but leave the name "grubia32.efi". I don't know why but after leaving this name, my Flex started to boot Ubuntu from disk.
Edit: You don't have to compile Grub. In your newly installed system, issue the three following commands (this will install the Grub version for 32-bit UEFI, remove the 64-bit UEFI version, and clean up possible mess caused by removing it):
sudo apt-get install grub-efi-ia32
sudo apt-get remove grub-efi-amd64
sudo grub-install
Don't forget to change Grub settings in /etc/default/grub. Also do not forget to run the command "sudo upgrade-grub".
You can skip the step with compiling new kernel with Flex. Hardware support seems already pretty good (except of touchpad).
The touchpad interprets a single tap with a finger as a right click. You can disable tapping and get used to the buttons as a temporary solution. It doesn't swap the buttons if you set so. If you are left-handed as me, you can force the swap of the buttons by issuing xmodmap -e "pointer = 3 2 1" from a terminal or from a script that you can run automatically on startup.
I followed exactly the same steps with Linux Mint with a full success.
On the start, I thought that Linux installation on Flex 10 was impossible.
As you can see, it is possible. And if you want, you will succeed and reach that goal.
--CIgydd Bach