How can I enable a swap partition?

[rocco.martinello]

My hard drive is partitioned as follows:

All partitions are primary partitions.
I have Windows 10 and Ubuntu 18.04.1 LTS dual boot.
I deleted Ubuntu swap file because I want use swap partition (that is listed above), but I don't know how to enable it (using free -m command I see that Ubuntu doesn't use the swap partition that I created).
How can I do to enable this swap partition?
If I use cat /etc/fstab on terminal the result is the following:

Thank you in advance for your answers!!!

[sporksrule]

Try this tutorial, it is what I use to turn enable a swap partition: https://www.digitalocean.com/communi...n-ubuntu-18-04

[wildmanne39]

Please use the default font color and properties unless you need to highlight or draw attention to a part of your post.

[Impavidus]

First find the UUID of the swap partition:

sudo blkid | grep 'TYPE="swap"'

Then modify your /etc/fstab and replace /swapfile with UUID=xxx, using the UUID you got from the command above. The line that now has /swapfile must then look something like

UUID=01234567-89ab-cdef-0123-456789abcdef none            swap    sw              0       0

The swap partition will be used after a reboot or running

sudo swapon -a

[rocco.martinello]

Hi Impavidus, thank you very much for your answer!
I used /dev/sda5 instead of UUID and it works!
Is it ok anyway to use /dev/sda5 instead of UUID?

[Tadaen_Sylvermane]

Depends on if you have other drives installed. What might be sda today may be sdb the net time you reboot. Uuids never change.