Make a new partition in root directory '/'

I have the 'rootfs' filesystem mounted on '/'. How can i partition '/' into 2 partitions such that rootfs is mounted on the first partition and another directory say 'temp' is mounted on the second partition. Kindly give me directions and tutorials which will help me accomplish this. I am very 开发者_如何学编程new to this. So kindly let me know the basic things to know solve this problem.

Kindly note that my '/' partition is on RAM and not on harddisk

You should learn how to use fdisk, /etc/fstab and mount.

I can recommand you to read this disk partionning guide : http://tldp.org/HOWTO/Partition/fdisk_partitioning.html