multiple hard drives

[Bruce]

Greetings,

I need help installing my 2nd and 3rd hard drives.   This is on a new 
system and I have installed Ubuntu 6.06 Desktop for Athlon 64.  My first 
hard drive formatted and accepted the operating system.  All seems ok 
with it.

The install didn't seem to give me an opportunity to format and mount 
the 2nd and 3rd drives.  I can't say for sure that it wasn't there, but 
if it was I missed it.

With ls I found:
  * /dev/hda (my system disk)
  * /dev/hdb (/media/cdrom0 per /etc/fstab)
  * /dev/hdc (my 2nd drive?)
  * /dev/hdd (my 3rd drive?)

Ubuntu 6.06 Desktop has the menu selection System --> Administration --> 
Disks.  This saw /dev/hdc and /dev/hdd but stated that they do not have 
known partitions.  So far this seems reasonable.

I wasn't able to google an exact hit on setting up the extra hard drives 
under Ubuntu, but fdisk did come up a lot.  Thus sudo fdisk   /dev/hdc 
allowed me to set up a partition.  The partition showed up as 
/dev/hdc3.  I'm new to the internals of Linux, but having the 
partitionless disk and the partitioned disk both show up in /dev with 
similar names seemed a little odd.

So far I seem to be making progress (as far as I know).  Now here is the 
problem.  Disk Manager lets me set an "access path" ( I assume that this 
is a "mount point").  Disk Manager also has a format button.  Clicking 
on format causes a progress bar to post with the initial display being 
about half done.  The display sits there for a couple of minutes without 
the progress bar being updated.  Then the progress bar goes away and I 
assume that the format is done.  At this point Disk Manager lists the 
free space as "232.88 GB (Free space not available)".  I was hoping 
after spending all this time and money that the free space would be 
available.

To /etc/fstab I added:
/dev/hdc3   /mnt/hdc3   ext3   defaults,errors=remount-ro   0  (copied 
from another entry)

The situtation is even more confusing for me.  If I do a cd /mnt/hdc3 
and do a sudo nano x.txt I am able to write to /mnt/hdc3/x.txt.

Disk Manager still states that the free space is not available.  Yes, I 
tried changing the ownership of /dev/hdc3 to the same user that was 
invoking disk manager (shouldn't be necessary since Disk Manager asked 
for a root password).

Thus, my questions are:

1)  Is my approach good or am I off in left field?

2) Any suggestions and/or corrections?

3) Is my x.txt actually going to my 1st hard drive or my 2nd hard drive?

4) Is it correct to have /dev/hdc and /dev/hdc3 in the same directory 
correct?

5) As far as I know my extra drives will mount under root and appear 
similar to /dev/hdc3.  If I do a df or du at root will I see one drive 
or both?

6) Is there a good tutorial out there on using multiple hard drives on a 
single system?

7) How do I mount or export the drives so other machines on the network 
can see them?

Thank you,
Bruce