and according to Gparted, 2 is mounted at /media/HDD1 and 1 is at /vista.
I believe you, /media/HDD1 just does not make sense to me, I would expect it to appear as /media/sda2.
I can see, judging by the sheer size of sda2 that it is your 'storage' partition and sda1 is your WinVista drive. it makes sense that this particular partition shows up in the folder '/vista' because you have done what I suggested. if you would like the 'storage' partition to be accessible the same way as your '/vista' partition you can repeat this procedure using a slightly different string:
open a terminal and type:
sudo mkdir /storage
then open your /etc/fstab file with root privileges by typing:
sudo gedit /etc/fstab
and add this line to the static section of the file: (copy paste)
/dev/sda2 /storage ntfs-3g defaults,umask=000,uid=1000,gid=100,auto,rw,user 0 2
and do a remount as tredegar suggested:
No need to reboot (slow, boring), just re-mount, like this:
sudo mount -a
I would at least keep this info somewhere for next time because how you got it to appear as /media/HDD1 remains a bit of a mystery.