I have a Sony VAIO AR21s and was trying to attempt clean reload of XP without all the Sony guff, prior to upgrade to Vista Ultimate. Created a boot disk using nLite to include RAID driver necessary for XP to recognise Hard drive with SATA connection All goes well until hard drive is formatted & XP files installed, then XP reboots m/c ...perfectly normal up to that point, except that XP then begins to reinstall from scratch. I can't get it out of this loop ...any ideas? Also, have reformatted hard-drive as part of setup and now my original Sony Recovery disc will not recognise hard drive to reload original configuration. have also tried to load Vista, but activation key won't allow it to work until I have a valid XP system installed.