lvm and FC5 question

[Brad De Vries]

Hey all, I have installed FC5 in a system with a 4GB hard drive.  I
choose as many of the defaults during installation as I could and as a
result I have lvm in use.

As you can imagine, I quickly started running out of disk space and so
I added a second 4GB hard drive and started the process of adding it
to the default volume group.  Here are the steps as well as I can
remember:

1) installed second HD
2) booted system and tried unsuccessfully to log into the Gnome
desktop.  It brought up a very basic graphical system with an xclock,
xterm and Firefox.
3) in the xterm I ran, as root, the fdisk command to remove all
partitions on the new drive (I want to use the entire drive for this
system.)
4) rebooted system, because I feel I should after an fdisk change.
5) system rebooted fine but still no Gnome login, just the basic (see
#2) desktop.
6) ran lvm and added the new phyical volume (pv) with pvcreate.
7) added the new pv to the existing volume group (vg) with vgextend.
8) resized the existing logical volume group (lv) with lvextend to add
1GB to the existing 3.34GB that was originally allocated.
9) rebooted again, just because I didn't see the increase in available
disk space with the df command.
10) still logged in with basic graphical desktop (see #2 and #5) and
the df command still shows the original 3.3GB size.
11) added another 1GB with lvresize and rebooted.  Still no change.

Obviously I'm missing a step or two but I'm not see what or where.
Any thoughts on what I should or can try?

TIA,
Brad.