HDD#0 is 40GB and has 6 partitions, #1-Win2k=4GB #2-Win98SE=2GB #3-Win2k3=2GB #4-Data=6GB #5-Downloads and Uninstalled Programs=25GB #6-Swap, Windows paging file=1GB. Partitions #1-#3 all start within the 1024 cylinder boundary and are all bootable primary partitions. HDD#1 is 6GB, one partition HDD#2 is 2GB SCSI, one partition, Adaptec ISABus SCSI Card When booting from #1, Win2k will see all drives and all partitions. When booting from #3, Win2k3 sees HDD#0 partitions, #3, #4, #5, #6, (#1 and #2 are hidden, as it should be) but does not see HDD#2, The Adaptec SCSI card is in the device driver list but the disk drive is not in the list. BootMagic controls the boot and is configured exactly the same as for the Win2k partition. The next thing to try is to move Win2k3 to HDD#1. HDD#2 is old and slow (SCSI-2). This is not a "show stopper", just can't figure out why this is happening. It may have nothing to do with Win2k3.