Linked Questions

2
votes
1answer
2k views

Downloading full blockchain again after using geth --fast on 0.7.4 [duplicate]

I've downloaded the newest mist browser on a new pc and used geth --fast. After fully syncing (which was about 1,5 hours) the syncing started from 0 again, but this time slow, downloading the whole ...
1
vote
0answers
56 views

I accidently started and canceled a fast sync with the blockchain almost fully downloaded, its at the beginning [duplicate]

I accidently started and canceled a fast sync with the blockchain almost fully downloaded. Now its at the beginning again when I start Mist. How can I get it to recognize the old blockchain.
104
votes
4answers
102k views

What is Geth's "fast" sync, and why is it faster?

One of the answers to this question suggested using Geth's --fast flag to help quickly synchronise the block data. How does the flag work, and how does using it speed up the synchronisation? Are we ...
42
votes
3answers
76k views

How to delete or reset the blockchain in geth? (OSX)

I have a currupt Blockchain and want to hard reset the chain. what do I need to delete in order to start downloading the chain from scratch? I know that there are 2 ethereum folders (I am on OSX): $...
39
votes
4answers
162k views

Is CPU mining even worth the Ether?

I would like to start mining Ether, but my GPU isn't the greatest and I don't really want to spend the money on a dedicated rig. Is mining from my CPU (in a Linux environment) still worth the Ether? ...
36
votes
4answers
76k views

How to mine Ether on GNU + Linux?

How do we start mining Ether on a Debian / Ubuntu / GNU+Linux based computer? Are there PPAs or special repositories?
23
votes
4answers
16k views

How can I empty the blockchain?

I am trying to do a fast sync using geth --fast but I am getting this message: blockchain not empty, fast sync disabled How can I empty the blockchain to allow for fast sync?
13
votes
1answer
4k views

Why isn't fast sync the default?

As I understand, fast sync has all the security guarantees of a full sync, but is faster. Is that correct? If so, why isn't fast sync the default?
8
votes
1answer
2k views

How do I tell whether the Mist/Wallet is "fast" or "full" syncing?

I'm currently installing Mist/Ethereum Wallet from the pre-built binaries. Having the run the ./Ethereum-wallet executable, it's now part-way through syncing the blockchain. It seems to be taking ...
4
votes
1answer
8k views

Geth synchronization

I downloaded geth and i've been waiting almost 3 days for the synchronization to finish. I've used the commands geth --fast --cache=512 --maxpeers 75 --jitvm. When geth is done downloading and syncing ...
15
votes
0answers
4k views

What is the difference between "geth" and "geth --fast"? [duplicate]

EDIT : I hadn't see the other question but this one ain't a duplicate because I'm asking here, precisely, if the state differs and if it does, what are the implications. The answer to that question ...
5
votes
1answer
864 views

Why is fast sync not working with geth 1.1?

When I run geth --fast I get: Incorrect Usage. geth [global options] command [command options] [arguments...] VERSION: 1.1.0 [...] flag provided but not defined: -fast How do I fix this?
4
votes
1answer
2k views

Wallet sync restarts from block 0 after closing and launch

I downloaded the Ethereum-wallet for OSX and started the sync. It took like 10 hours to sync more than 1M blocks. I closed the wallet and restarted today, but I was surprised to see that the sync is ...
3
votes
1answer
277 views

5th time downloading Blockchain 15 days

I started with geth wallet the first time. Got to near the finish and it started itself over at the beginning. The last four times have been with parity, which seems to queue forevever and then ...
2
votes
1answer
321 views

Does geth say when the blockchain is completely updated?

I am using geth to download the entire blockchain via the command: geth --fast --cache=1024 --jitvm Everything appears to be going fine so far. I was wondering if there will be a notification when ...