Ok I've done something wrong... when I started to do your suggestion I got this....

Starting bash.
empeg:/empeg/bin# rw
empeg:/empeg/bin#
empeg:/empeg/bin#
empeg:/empeg/bin# dd if=/dev/zero of=/swapfile2 bs=1048576 count=16
dd: /swapfile2: No space left on device
7+0 records in
6+0 records out
empeg:/empeg/bin# swapon /swapfile2
Unable to find swap-space signature
swapon: /swapfile2: Invalid argument
empeg:/empeg/bin# swapon/swapfile2
bash: swapon/swapfile2: No such file or directory
empeg:/empeg/bin#