UPDATE 11.4.2017
Ok, yesterday I successfully followed 1:1 the instructions published under "[Guide] How to get full NVMe support for all Systems with an AMI UEFI BIOS"
- I modified the BIOS 2104 of my ASUS Sabertooth Z77 by adding the NVME EFI module listed under >uncompressed NvmExpressDxE_2 module GUID 9A 4713C2<
- I flashed the modified (Z77ST.CAP) using the flashback method
- I installed my Intel 750 NVME SSD 1.2T
- I installed win 10 on the 750 using a win 10 ISO file stored on a USB stick as instructed under point 13 of "[Guide] How to get full NVMe support for all Systems with an AMI UEFI BIOS"
- I checked that the fresh installed system was successfully booting from the Intel NVME SSD
After that being a little bit lazy and not wanting to reinstall all the SW (~ 20 3D games , MS office, Photoshop SW…)…
- I started the system with the old SSD configuration (2 SSD Samsung 840 Evo in Raid 0)
- I updated my win 10 with the latest win 10 version (Win 10 Creator)
- I deleted the partition of the 750 SSD containing the fresh win 10 installation
- I migrated the OS contained on the RAID 0 to the 750 SSD (using Paragon SW)
I shutdown the PC, disconnected the two SSDs used in RAID 0 mode, started the PC, went in the BIOS, disabled the RAID 0 and enabled the 750 SSD as boot drive, saved the configuration and restarted…
…and it was done !!! After about 1hour my complete win 10 installation was newly booting from my Intel 750 SSD NVME
Overall performances are absolutely inline with what to expect from a Intel 750 SSD in NVME mode.
Thanks a lot to all contributors of this great Forum and of course Fernando.
PS
I can provide the modded BIOS if somebody is interested.