you can use the File and Settings Transfer Wizard found in Accessories -> System Tools
That link is for DOS.
And in DOS 6.0 they added a command where you could type format D: /Autotest/s and it would automaticaly make the d: drive bootable.
I've never used the Wizard but I bet it does it all. If you want more info especially if your using a diffrent O/S then just write me!