How does one go about setting WINXP to give you a dual boot screen/choice between OSs on different partions at startup? My laptop hardrive has two partitions, one 'main', the other a backup, with WINXP SP2 loaded on both partitions. Initially, the computer would boot to a dual boot screen asking which OS I wanted to run from. Recently Windows on the main partition became unstable/erratic so I booted to the backup, offloaded my files to a backup USB drive, reformated the main partition and reloaded WINXP SP2 on that partition w/o touching the backup partition. Now when I boot the computer it goes directly to the new/main partition OS; there is no dual boot screen. The backup partition is still present with files apparently intact. Thanks for the help.