Vista - Reinstalling Vista: 2 unknown partitions

Posted to: microsoft.public.windows.vista.general +
microsoft.public.windows.vista.installation_setup
Follow-up to: microsoft.public.windows.vista.general

Hello from France.
Here is my problem of the day...
I just put a new, 160 Go hard disk in my Dell Inspiron laptop.
Then, following Dell's instructions as found on a flyer that came with the
machine, this is what I did :
1. install Dell's "For Reinstalling Dell Media Direct 3" DVD
2. install Vista
3. finish with "For Reinstalling Dell Media Direct 3"
At stage #2 I choose to have C: at 50 Go, leaving the rest to D:
Once Vista was installed, I found that D: had yet to be formatted, which I did.
Now, as I take a look at the system, I find that there are in fact 4 volumes:
- one is 47 Mo - "Type :" basic - "Statut :" Sound (Configuration EISA) ; this
one can't be touched
- second is 2,01 Go - "Type :" basic - "Statut :" Sound (Principal partition) ;
this one can be deleted
- then C: et D:
I've been searching the internet, and found quite incoherent bits of
information, so I decide to ask you all:
1. how were those two, unnamed volumes created?
a. may the first one have been created by the first, Dell DVD I used first?
b. then which program can possibly have created the 2,01, and what was it
intended for?
2. can I safely suppress the 2,01 Go partition and try to have Vista give them
to C: (which, I'm afraid, may prove too small, as I guess the system files will
be getting bigger in the future)?
Thanks *very sincerely* for your attention, and thanks in advance for any
answer.
So greeting from France.
--
a.

I guess "Installing Vista" should have been the proper name of the post, as I am
using a new hard disk. Sorry for that.
--
a.