Fernando, The box has two 750GB SATA drives as well as a SATA CDROM and 8GB of memory on 4 modules. I overlooked the removal of the additional memory on my attempted install last night but will give it a go that way this evening. As for the SATA CDROM, I have that disconnected per your instructions and am using an IDE one instead. In regard to the boot order, on initial install it was set up to first try the CDROM - so I could boot the Win install disk - then the HD arrray. It's strange because it seems to be to be an issue of the array not being recognized as a valid boot device. The steps I'm taking on install are as follows. 1. Boot machine pressing F10 for MediaShield. 2. Delete array from previously failed install... reboot... 3. F10... Create array (Mirror) using 2 identical 750GB SATA drives... mark array as bootable... save config... reload. 4. Boot nLite created WinXP(SP2) disk with GeForce dirvers (Note: CD image created from original valid OEM XP CD + drivers, no additional nLite tweaks) 5. Installer runs to the point of drive partitioning (with some dirvers I've tried, I get BSOD at this point. with others install continues fine.) 6. Partitioning drives into 2 parts - 100GB "C:" and 650GB "D:" and format using NTFS 7. Windows completes phase one of install... reboots... continues to phase two... completes... reboots... 8. At this point I gotten various results depending on the drivers I've used. Some have resulted in endless reboots, some with just a blinking cursor. Last night when using the 103042 driver I got the messages printed in my previous post. I'll try pulling all but one of the memory modules reinstalling again tonight, but it appears that the system is not recognizing the logical drive as a valid boot device or there's something screwy with the the way the system is setting the MBR. Thanks.