If you don't mind wasting the space taken by the current swap partition, you can delete it, then re-size the last partition and put an extended one in the resulting free space. This would be quick and less risky.1. I delete swap - this frees a Primary partition
2. Resize sda4 (third distro) and create an Extended one and put the 4th distro there, what happens to Swap and the remaining Primary partition?
what happens if i put the fourth distro in a Primary partition (left by the deletion of swap) and run all of them without swap?
I got 4 gigs of ram, and i don't use kde/gnome.