After a lot of difficulties to make a reliable bootable USB pen with Win XP and a lot of AIO solutions, i found Easy2Boot.
This is the one and unique solution which led to a complete installation of the OS.
The support of AHCI controler is great. The necessity is to plug the destination drive on the ASMEDIA 3rd party controler (dev id : 1b21 0612). My board is an Asus Maximus VII Gene.
I have this small request ; is it possible to implement the native intel Z97 controler to plug my hard drive on it ? Dev id is 8086 8c82
To conclude i would like to thank you, this site is a mine of knowledge.
By Nicolas FKA The Real Deal
Subject E2B + Z97 chipset