Incredibly frustrated by a dozen or more attempts at a clean installation of Windows 7 RC1 x64 on a brand new system I just built! Win7 RC1 (x64) simply will NOT install in a RAID 0 configuration on my setup. Each time my installation process stalls with the same message: "Setup was unable to create a system partition or locate an existing partition." I cannot go any further and I am forced to end my installation and the computer reboots. I have the latest Intel ICH10R SATA RAID drivers on a thumbdrive (instead of crappy floppy 'F6' style) and I've tried loading the ICH10R drivers from thumbdrive AND mb maunfacturer's DVD. The partitioned drives are never recognized properly by the Win7 setup apparently. Although the patitions ARE VISIBLE and I can expand the ADVANCED OPTIONS and delete, format, etc., I receive the same error message above and can go no further. No luck with anything I've tried. I've spent hours and hours scouring the net for answers to this issue. Apparently this message is VERY COMMON but no one has a reliable answer at all. I have checked, checked and RECHECKED my BIOS settings and have even gone to great lengths to insure that ALL non-essential hardware is disconnected during these install attempts. I have even moved my SATA DVD connection from the ICH10 to onboard Gigaraid SATA controller. The ONLY HDDs installed on the ICH10 are the two velociraptors which are configured by the RAID BIOS and are properly recognized by the system and Win7 installer. My system: GIGABYTE EX58-EXTREME mb Intel i7 920 quad-core processor 12GB DDR3-tri-channel OCZ ram (2) 300 GB WD Velociraptors in RAID 0 configuration Samsung SATA DVD burner Sapphire HD4870 1GB GDDR5 PCIe GPU ((no FDD at all, so using 8GB thumbdrive for F6 drivers)) All additional drives (WD 1TB eSATA drive and other Raptor drives) are NOT connected at this time to avoid causing conflicts! I have recently read posts that indicate there are 2 log files created during each attempt at installing Windows 7. I found them in the following location: X:\windows\panther\ however, there seems to be no usable information contained in these files to aid in troubleshooting this problem. Is this a known problem with a workaround, or is M$ even trying to resolve this issue, which is happening to countless individuals trying to perform a clean installation Win 7 RC1 (and Beta build 7000)? Thanks in advance for any and all help! Brendon sidenote: Win7 RC1 x64 installed and worked great on my old Gigabyte 8i955x Royal system w/ Pentium D (EM64T), 2gb DDR2 and 4 Raptors in Raid 10 using ICH7R controller. That system had a tri-boot configuration that was far more complex than this new system I just built. Perhaps Win7 just doesn't play nicely with certain newest pieces of hardware? I have read about many users successfully installing and using W7 x64 on very similar systems with little to no problems. I'm baffled by this!