No, the *first* one was bad for that reason
He assumed I'd know the step I missed. I didn't. But since setting up new disks is something I have to do rarely, and expect to do very few times in the future, I really don't have any desire to absorb the lore. A real sysadmin knew what I wanted (a working filesystem[*]) and told me the steps to do it. It's all magic incantations at some level. This is one I just needed done.
* Actually, all I cared about is that ever since I tried to put XP on the second disk I haven't been able to boot it without being there to hit Ctrl-D halway into the process. If that goes away, without having to crack the case (again) and unplug the damn drive I'm happy.
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Implicitly condoning stupidity since 2001.