The new hard drive was shipped from Vancouver yesterday. In terms of initial format and and partitioning, I know I am limited in the number of partitions I can make. I was thinking of making one boot partition and then two reasonably similar 30GB sized partitions for each of the two operating systems. The web page I meantioned below suggested that Grub will not work well with WinXP. This author suggested using Boot Magic in its own Win FAT partition of a fair size that both operating systems could view and access. Boot Magic comes free with Partition Magic. So this is perhaps undecided at present.