I'm using WinSetupFromUSB beta6. I have Windows XP Professional SP3 and Windows XP Home SP3 - all placed in //WINSETUP in the root dir on both devices. Both Windows' CDs/Versions are not modified by anyone, because i downloaded them from MSDN and i've also checked the hash sums. My devices are: 1. Samsung S2 500GB split in two: 1. 65.6 GB primary, non-active, NTFS 2. 400 GB primary, non-active, NTFS. I've used "grubinst-1.1-bin-w32-2008-01-01" and placed "grub4dos-0.4.4-2009-06-20" in the root of #1 65.6GB, then i used WinSetupFromUSB beta6 to add both Windows sources. I've never had problem before, i've done many successful installations, but this time on a desktop PC it resulted in error that (i cant quote the exact info) biosinfo.inf is missing, error 14. 2. PQI 4GB USB-Thumb drive: FAT32, Primary, active. I did the same procedure like i did on my Samsung and it works.