Installing a Full Node under Linux

[citb0in]

Understood. This information should IMHO be published officially on the documentation and wiki related to bitcoin-core and setup/installation. Thanks to all so far

[n0nce]

You also can't upload older blocks to other nodes.

Can you give examples why an average user should need to upload older blocks to other nodes, please? Is this something the user manually need to initiate and for what reasons ?

That's how the Bitcoin network works.. Who do you think you got the whole blockchain from? Other users with their own full nodes..
Even when initializing a pruned node, all the blocks need to be downloaded and the only way to get them is from other users who keep the 'full archive' (no pruning).

Yes, I understand the point of a full (unpruned) node. However I was curious if "uploading older blocks" has a certain reason and when this needs to happen, just for my understanding. BTW: Meanwhile I have installed and running five different nodes on various sites across the planet, I am trying to contribute as much as possible and affordable to me 

Good job, but again; if they're all pruned, they won't be uploading (helping the network) a lot at all..
Better run one full 'archival' node than 5 pruned, if you have the choice.

[citb0in]

Of course, this is my goal --> to run minimum one full-node which is not pruned. Thank you

[NotATether]

Did you overlook this post?

the blocks directory contains the actual blocks. The chainstate directory contains the state as of the latest block (in simplified terms, it stores every spendable coin, who owns it, and how much it's worth).

indeed. Thanks for pointing out. Related to the data structure l also found some interesting information here and here. Nevertheless, I would suggest to explicitly state that in the bitcoin-core documentation or wiki. A user would mistakenly assume that the prune value is what would be expected for the node setup related to the disk space required. However, we have just clarified that this is not the case. Unfortunately, I have not found any reference to this in any documentation so far. Only my recommendation to emphasize this.

I don't have write access to the docs but I'll find a section in the Wiki to insert this in, preferably one about Bitcoin Core (which I'm suspecting is as least 2-3 versions out of date?)

[citb0in]

This would certainly benefit everyone. Thank you for your effort.

[BlackHatCoiner]

If you want to contribute more to the network, run one unpruned full node, instead of many pruned. Pruned nodes don't advertise themselves as having any blocks, by default. They only relay unconfirmed transactions and the chain tip.

Alternatively, you can help by spreading the word. That's network contribution for sure. Encourage others to get involved into bitcoin. Encourage merchants to accept it. Vote for politicians that are supportive with the concept. Talk about bitcoin whenever you feel it can bring essence to a discussion. Educate your friends. Educate yourself.