How do i create RAM drive under ubuntu. And would he automounted at startup?
gksu gedit /etc/fstab
Add the following line to the bottom of the text file that opens but BE CAREFUL – do not touch, edit or enter ANYTHING else:
tmpfs /media/ramdisk tmpfs defaults,noatime,mode=1777 0 0
I don't quite know what you mean with a RAM drive but if you mean more swapspace, you'll have to use a livecd with gparted, add a new swap partition, and then edit /etc/fstab to make the swap partition mount on boot.
Be careful, though, since making a mistake while editing fstab could have disastrous results and your system may not boot up anymore.
Also, you can mount two partitions under the same name, like swap.