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I am trying to make private block chain. I am following this link

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  • Hi there. What command did you use to start Geth? If it's a brand new private chain, there shouldn't be any data to sync. Dec 5 '17 at 17:11
  • @RichardHorrocks thanks for replying. I ran "geth — identity “yourIdentity” — init /path_to_folder/CustomGenesis.json — datadir /path_to_your_data_directory/ACPrivateChain" this command Dec 5 '17 at 17:14
  • Just to check - did you substitute values into each of the parameters? i.e. Did you substitute something for "yourIdentity"? There's a part in the link you referenced about network IDs - have you tried doing that? Dec 5 '17 at 17:35
  • @RichardHorrocks I have substitute values but still it was syncing, now i am trying commands written below on that same post (the network ID command). Please suggest me any good link to proceed with setting up private ethereum block chain Dec 5 '17 at 18:16
  • Have a look at this previous question and answers for some other ideas: ethereum.stackexchange.com/questions/125/… (Some of the answers are quite old, but the general idea should be the same.) Dec 5 '17 at 18:21
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If it is importing all the headers that means its syncing with public block chain.

So to make private blockchain. Please follow below steps

  1. create genesis.json
  2. run on mac terminal - "geth init path_to_geneis/genesis.json"
  3. then to start your private network run - "geth -networkid=111 console" [111: choose any unique number for network id]
  4. your console for private network will get open. now you can proceed !!

Thanks in advance.

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