The correct sequence of steps is this ( note the bold ): [20:23:11(root@surcopi)~] # free -h total used free shared buff/cache available Mem: 704Mi 325Mi 36Mi 34Mi 342Mi 281Mi Swap: 99Mi 0B 99Mi [20:23:14(root@surcopi)~] # dphys-swapfile swapoff [20:24:50(root@surcopi)~] # free -h total used free sh...