# zramctl > Setup and control zram devices. > Use `mke2fs` or `mkswap` to format zram devices to partitions. - Check if zram is enabled: `lsmod | grep -i zram` - Enable zram with 2 devices (use `zramctl` to configure the devices further): `sudo modprobe zram num_devices={{2}}` - Find and initialise the next free zram device to a 2GB virtual drive using LZ4 compression: `sudo zramctl --find --size {{2GB}} --algorithm {{lz4}}` - List currently initialised devices: `zramctl`