You need a place to mount to. That is called the mountpoint. Create a mountpoint like this:
mkdir /media/mystuff <-- Call it anything you like
At this point you can mount the partition manually, like this:
mount -t ext3 /dev/sdb1 /media/mystuff
The partition should be mounted and available by browsing to /media/mystuff. It will remain mounted until you manually unmount it (umount /meda/mystuff) or you reboot. To have it mount automatically, at boot, add an entry in /etc/fstab, like this:
/dev/sdb1 /media/mystuff ext3 defaults 0 0 (Pay attention to the spaces in this line).
The partition will then mount automatically whenever you boot your system.

You can't mount /dev/sda, /dev/sdb,/dev/sdc. Those are the drives. You can only mount /dev/sda1, dev/sda2,/dev/sdb1, /dev/sdb2, etc. Those are the partitions.

Got it to work. Below is what I used (sdb1 was already define during the OS installed).


--------------------------------------------------

fdisk /dev/sdb

n = add a partition, choose primary, next available partition
w = write table to disk and exit

mkfs -t ext3 /dev/sdb2

mkdir /mnt/vol1

mount /dev/sdb2 /mnt/vol1

fstab

/dev/sdb2 /mnt/vol1 ext3 defaults 0 0


What is that option -t (mkfs -t ext3) mean?

Also, do people write table to disk after creating the partition?
When I was doing it for drive sdc, I didn't get any message after writing the writing the table to disk (my guess is because disk was empty to begin with).

For sdb, I got some message saying something about the kernel still using the old table until a reboot then it will use the new table (I guess since part of the disk has been define during the OS so the table was in used.)

Thanks again Glenzo.

Tony

Great! Glad it worked for you!
-t fstype Specifies the type of file system to be built. If not specified, the default file system type (currently ext2) is used.

Taken from man mkfs.