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I have two HDDs with two partitions each:

----1 HDD----
C:\             D:\

----2 HDD----
E:\             F:\

Windows 8 is installed on the C:\ drive. I've installed Ubuntu on the E:\ partition.

When I restart the notebook it shows up the thing with cannot find device, grub.rescue>. I press Ctrl + Alt + Delete and enter the BIOS. There are three boot devices (Windows boot loader [sort of that], Ubuntu, Ubuntu), and I change the boot order (it does not matter which one is first), save and exit.

After that it leads me to GRUB menu, where I can choose Ubuntu, or Windows EFI. I enter Ubuntu, restart again, and then the same thing happens, grub.rescue. Again Ctrl + Alt + Delete -> BIOS, change boot order (I repeat, it does not matter which one is first), then again goes to the GRUB menu.

I've ran boot rescue, and this is the output.

Boot successfully repaired.
Please write on a paper the following URL:
http://paste.ubuntu.com/5720353/

In case you still experience boot problem, indicate this URL to:
boot.repair@gmail.com or to your favorite support forum.

You can now reboot your computer.
Please do not forget to make your BIOS boot on sda1/EFI/ubuntu/grubx64.efi file!

The boot files of [The OS now in use - Ubuntu 12.04.2 LTS] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, >200 MB, start of the disk). This can be performed via tools such as GParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https://help.ubuntu.com/community/BootPartition)

What should I do to get straight to the GRUB menu? And why are there are two Ubuntus in the boot options in the BIOS? (one of them is the OS itself, and the other is recovery mode or what?)

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