Yeah, yeah, I know. An external hard drive is nothing more than a regular hard drive in an external case. So why do we pay the premium to buy one? For simplicity's sake. It's "ready to go." It's designed to work.
So how come my new 250 external hard drive didn't work? I plug it in, it revs up, the USB controller shows that something is connected, but no hard drive is detected. What's up with that?
And so, the geek in me tells me to open it up and twiddle with the insides. Maybe a cord is loose, or something obvious like that.
Opening up the hard drives was like, I don't know, like seeing the Mickey Mouse character at Disney Land, only without his head on. Though I alredy knew before-hand what was inside the case, seeing how simple it was with my own eyes was a bit of a shock.

The 160gb is a
Western Digital Caviar 1600BB while the 250gb is a
Maxtor DiamondMax 10.
Surprisingly enough, both of these drives are 7200rpm, even though there is a more expensive model of these drives marketed as 7200rpm drives. A major difference between my two drives is that the 250gb Maxtor has a 16mb cache whereas the 160gb Western Digital has only a 2mb cache.
So, after poking around a little bit, I thought it was weird that the 250gb Maxtor's jumper block was set to a "Primary Drive," while the 160gb was set to "Cable Select." Worth a shot, I told myself; change the Maxtor to Cable Select as well.
Hooking everything back up together, I tried to install the hard drive again. But alas, that wasn't it. Still no hard drive showing up.
What to do, what to do? I downloaded the buffalo Hard Drive Management program. The drive showed up with the program, but it seemed as if it wasn't properly formatted for DOS. Bingo!
The next three hours I wait. . . and wait. . . and wait until the hard drive is physically reformatted. I figured, I might as well start from the very beginning.
Three hours later, I find that I still have to format and partition it in NTSF sections, which takes about another half hour or so. I partition it into three 80gb partitions, each one named after a Pompoko character (Tamasaburo, Gonta, and Oroku).

So, about five hours later, my drive is finally ready to go. I'm not sure why it was so difficut, but I feel a bit proud of myself for having figured it out.
Until, of course, I look at the box. I'm not sure exactly what it says on the box, but is it possible that this hard drive was "ready to go?" Only that it was "ready to go" for a Mac? Ha ha ha!