I am referring this tutorial and
miner.start(1) works fine and mining is started as expected like below.
INFO [09-05|15:41:26.486] Commit new mining work number=221 sealhash=1892af…f2ffcd uncles=0 txs=0 gas=0 fees=0 elapsed=243.187µs INFO [09-05|15:41:26.706] Successfully sealed new block number=221 sealhash=1892af…f2ffcd hash=10497a…b00914 elapsed=219.629ms INFO [09-05|15:41:26.706] 🔗 block reached canonical chain number=214 hash=b3cb32…9dbe53 INFO [09-05|15:41:26.706] 🔨 mined potential block number=221 hash=10497a…b00914 INFO [09-05|15:41:26.707] Commit new mining work number=222 sealhash=36083f…4c7697 uncles=0 txs=0 gas=0 fees=0 elapsed=202.361µs INFO [09-05|15:41:32.083] Successfully sealed new block number=222 sealhash=36083f…4c7697 hash=18607b…9362b7 elapsed=5.376s INFO [09-05|15:41:32.083] 🔗 block reached canonical chain number=215 hash=5ce9de…005985 INFO [09-05|15:41:32.083] 🔨 mined potential block number=222 hash=18607b…9362b7 INFO [09-05|15:41:32.084] Commit new mining work number=223 sealhash=90508f…09cb94 uncles=0 txs=0 gas=0 fees=0 elapsed=158.478µs
Now the author says to check balance after mining starts, so to do that i open a new geth window console says
Fatal: Error starting protocol stack: listen udp :30303: bind: address already in use
which is obvious because of mining window which is running currently.
So my question is how can i check balance after starting miner?
Or should i wait for completion of mining?
If i should wait for mining completion then how much time it will take to complete?