Hello I just installed Win 8.1 x64 on my computer. Sabertooth x79 + 3930k + Samsung SSD 500Go (and SSD Intel 160GB) Both sata are connected on SATA GBPS (brown sata) Link of my boot : http://pastebin.com/2kXHSVeU THe PreSMSS time is very long. What can i do ? Unplug Hard Disk to check the difference ? and ? Every HDD are on Intel Chipset, nothing are connected on Marvell Chipset. My system are installed in UEFI. But if i format HDD in GPT, does it change anything ?