I have three hard disks, one has two partitions, and two have 1 each. So that is no problem. You need to partition your 40gb drive. That can be done with fdisk. If you want to move linux from the 4gb to the 40gb, you may want to try a program like norton ghost.
BTW, after you use the su command and enter the root password, it should look something like "$root@localhost:"
And if it tells you "command not found", then just like dos, you haven't typed in the command correctly...or that command isn't available to you. What are you trying to do?
Example of commands:
cd - change directory
rmdir - remove directory
mkdir - make directory
vi - a text editor (stands for virtually impossible
)
ping - sends a request for info to a server