How to add the unallocated space/partition to the Fedora partition/drive?

Finally removed Windows.
How do I repurpose the unallocated space so that the Fedora partition can use it?
Unable to find anything on youtube, google or here about this specific issue?

The simplest way is to format the unallocated space as Btrfs and add it to Fedora file system.
Example:
sudo btrfs device add -f /dev/sdaX /

You should now see the increase in available space:
sudo btrfs filesystem usage -T /
sudo btrfs filesystem df --si /

For further details

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Have a look at this:

Moving Space Between Partitions

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Thank you. That did the trick.

Thank you.
One problem the article doesn’t mention is that, as you can see in the screenshot, there is no left pointing arrow on the new RTFS sda2 partition. Thus I can’t follow the instructions as I need the left pointing arrow, not the right pointing arrow as is the case here.

If you followed the procedure I suggested, there’s nothing more you need to do, because you’ve already merged the Btrfs partition into Fedora’s filesystem. Now you physically have two partitions that work as if they were a single one.

With GParted, you can merge two partitions if the unallocated space is adjacent, but in your case the “/boot” partition is in between, which makes it more complicated.

Can you show the result of this command?

sudo btrfs filesystem usage -T /

sudo btrfs filesystem df --si /

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