How to solve error: Incorrect or no genesis block found. Wrong datadir for network? I am making my own alt-coin, and I have mined the first genesis block hash(after some time), Merkle hash, nnonce and time. I am running on Ubuntu14.04.

But when I run ./bitcoind I get this error


  Error: Incorrect or no genesis block found. Wrong datadir for network?


What does it mean? how do I fix it?

Here is debug.log shows:


2018-04-02 18:33:04 Booducoin version v0.8.7.4-gc1e46ab3a90b-beta ()
2018-04-02 18:33:04 Using OpenSSL version OpenSSL 1.0.1f 6 Jan 2014
2018-04-02 18:33:04 Default data directory /home/boodu/.booducoin
2018-04-02 18:33:04 Using data directory /home/boodu/.booducoin
2018-04-02 18:33:04 Using at most 125 connections (1024 file descriptors available)
2018-04-02 18:33:04 init message: Verifying wallet...
2018-04-02 18:33:04 dbenv.open LogDir=/home/boodu/.booducoin/database ErrorFile=/home/boodu/.booducoin/db.log
2018-04-02 18:33:04 Bound to [::]:9333
2018-04-02 18:33:04 Bound to 0.0.0.0:9333
2018-04-02 18:33:04 init message: Loading block index...
2018-04-02 18:33:04 Opening LevelDB in /home/boodu/.booducoin/blocks/index
2018-04-02 18:33:04 Opened LevelDB successfully
2018-04-02 18:33:04 Opening LevelDB in /home/boodu/.booducoin/chainstate
2018-04-02 18:33:04 Opened LevelDB successfully
2018-04-02 18:33:04 LoadBlockIndexDB(): last block file = 0
2018-04-02 18:33:04 LoadBlockIndexDB(): last block file info: CBlockFileInfo(blocks=1, size=241, heights=0...0, time=2018-04-01...2018-04-01)
2018-04-02 18:33:04 LoadBlockIndexDB(): transaction index disabled
2018-04-02 18:33:04 LoadBlockIndexDB(): hashBestChain=5e55391ddfe7258c5d1dc5ebf2c8ce9bdec72edf482f171a6cb04416c53be9b8  height=0 date=2018-04-0$
2018-04-02 18:33:04 Error: Incorrect or no genesis block found. Wrong datadir for network?
2018-04-02 18:33:04 Shutdown : In progress...
2018-04-02 18:33:04 StopNode()
2018-04-02 18:33:04 Flushed 0 addresses to peers.dat  3ms
2018-04-02 18:33:04 Committing 0 changed transactions to coin database...
2018-04-02 18:33:04 Shutdown : done
Question:


  when I run ./bitcoind I get this error


Error: Incorrect or no genesis block found. Wrong datadir for network?




Answer:

Delete /home/boodu/.booducoin (~/yourcoinname/.yourcoindatadir) folder and restart daemon.