README: mention pruning

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moneromooo-monero 4 years ago
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@ -22,6 +22,7 @@ Portions Copyright (c) 2012-2013 The Cryptonote developers.
- [Dependencies](#dependencies)
- [Internationalization](#Internationalization)
- [Using Tor](#using-tor)
- [Pruning](#Pruning)
- [Debugging](#Debugging)
- [Known issues](#known-issues)
@ -671,6 +672,16 @@ DNS_PUBLIC=tcp torsocks ./monerod --p2p-bind-ip 127.0.0.1 --no-igd --rpc-bind-ip
--data-dir /home/amnesia/Persistent/your/directory/to/the/blockchain
```
## Pruning
As of May 2020, the full Monero blockchain file is about 80 GB. One can store a pruned blockchain, which is about 28 GB.
A pruned blockchain can only serve part of the historical chain data to other peers, but is otherwise identical in
functionality to the full blockchain.
To use a pruned blockchain, it is best to start the initial sync with --prune-blockchain. However, it is also possible
to prune an existing blockchain using the monero-blockchain-prune tool or using the --prune-blockchain monerod option
with an existing chain. If an existing chain exists, pruning will temporarily require disk space to store both the full
and pruned blockchains.
## Debugging
This section contains general instructions for debugging failed installs or problems encountered with Monero. First, ensure you are running the latest version built from the Github repo.

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