philiplongoria:
I tend to agree with the responses you've received to date indicating that
at this point in time, and given your present system, you shouldn't be
overly concerned with "getting ready for Vista". There's a long way to go.
But notwithstanding the forthcoming Vista OS, there is some merit in your
wanting (at this time) to establish your 129 GB HD as your booting C: drive
in lieu of your current C: HD of 15 GB. At least that's what I'm assuming
you would want to do when you say you're interested in "Making D drive the
main drive".
Unfortunately, there's no way you can physically "swap" the two drives so
that your present 15 GB drive would become the C: (boot) drive and your
larger HD would take on the D: (or other) drive letter assignment. In other
words, merely changing (switching) the drives' connections to the
motherboard's IDE controller (assuming that's what you possibly had in mind)
simply wouldn't work.
But there is a way - with, however, some possible negative implications...
Using a disk imaging program such as Symantec's Norton Ghost or Acronis True
Image (or similar programs) you could "clone" the contents of your 15 GB to
the larger HD. By so doing you would be transferring the operating system
and whatever other data is on that 15 GB onto the larger HD. The problem
with this is that the disk cloning operation would effectively delete *all*
the data that was on the larger HD prior to the disk cloning operation .The
resultant clone would be (for all practical purposes) a mirror image of your
smaller HD but of course you would have the utilization of the full disk
capacity of the larger drive together with the superior performance of that
latter HD as compared with the 15 GB one. Under those circumstances the
larger HD would be designated the C: HD. You could either dump the smaller
drive or use it as a secondary HD for some storage or backup purposes.
So assuming you could live with the current contents of your 129 GB HD being
wiped out, the preceding may hold some appeal for you.
Anna