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UEFI/GPT Win 7 load failure and no GRUB2 in Ubuntu 12.04

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http://askubuntu.com – Configuration: MBB: ASRock X79 Extreme6 - Win 7 installed on a INTEL 40GB SSD (GPT partitioned) - Ubuntu 14.04 on a CORSAIR 30GB SSD (Ext4 and SWAP) Windows has been installed previously in UEFI mode, using 3 partitions (GPT) and works fine if left alone. In UEFI BIOS settings I see sometimes a "Windows Boot Manager" and other times (?) a "UEFI Intel" entry for INTEL HDD and Windows will boot properly selecting them. Ubuntu has been installed after Win 7 w/o any UEFI BIOS changes but works fine only if the BIOS is put in AHCI mode and if the UBUTU Corasir SSD is set as the first to AHCI b (HowTos)