I am installing Bitcoin-Qt and have been reading about Bitcoin basics, but I found very little information on the client. I have a few questions about the Bitcoin-Qt program (v0.8.1-beta under Windows 7),

Where is the complete Bitcoin-Qt documentation? I can not find it.
How do I change the file locations for the block-chain storage?
- Block chain is ~6 GB
- The default appears to be MyDocuments\AppData\Roaming\
- My C: system drive is small, and I have a second drive for such data.
Is the "Wallet" a separate file/entity from the block-chain?
- How do I define the wallet's location?
- Can I backup the wallet by simple copy/paste/tar.gz without carrying the entire block-chain?
Does the Bitcoin-Qt client currently have built-in mining/transaction-processing? I do not see the dialog-box to configure. I have a graphics card and ample wasted CPU-cycles.

Thanks for clarification. Links to proper documentation are welcome!

Garrick

Posted 2013-04-06T16:33:16.317

Reputation: 323

Where is the folder in Windows 8.1? He is not under AppData \ Roaming – None – 2014-06-04T09:31:29.650

Answers

Here:
- https://en.bitcoin.it/wiki/Bitcoin-Qt
- https://www.google.com/search?q=bitcoin-qt+documentation
Use the -datadir option.
Right-click on your bitcoin-qt shortcut, press properties, and add -datadir=D:\Bitcoin
Go make that directory, then run bitcoin. If a bunch of files show up in there, you've done it correctly.
Yep.
- -datadir
- File > Backup Wallet
Yes, but not GPU mining. GUI miner is a nice option though.

Nick ODell

Posted 2013-04-06T16:33:16.317

Reputation: 26 536

Did the same. Unless I did something wrong, it doesn't seem to work. – Chiffa – 2013-12-02T00:45:38.667

What is the full datadir syntax, windows returns the error of: "The name of C:\[Path To]\Bitcoin-qt.exe-datadir=E:\Bitcoin_Wallet specified in the Target box is not valid. Make sure the path and file name are correct"? – GiantCowFilms – 2014-10-26T16:58:53.877

1@GiantCowFilms There's supposed to be a space between exe and -datadir. – Nick ODell – 2014-10-26T17:01:53.583

Fixied!(Thanks @NickODell) for any one who is curious, here is the full syntax:C:\Program Files (x86)\Bitcoin\bitcoin-qt.exe" -datadir=e:\Bitcoin_Wallet – GiantCowFilms – 2014-10-26T17:03:32.973

Just FYI, you can use Windows based solution, create reparse point that point to another directory, just like symlink in Linux

rustylife

Posted 2013-04-06T16:33:16.317

Reputation: 21

I don't have enough rep to down vote. See comments for Bitcoiner's answer. We established there is an accepted answer, this has nothing to do with Linux and complete sentences are appreciated. – Garrick – 2014-09-04T19:14:56.047

It seems several people are interested in how to create symbolic links in Windows. I know I was. This allows you to move your data directory to another hard drive without having to add the datadir flag.

It's actually not that much different.

To create a symbolic link (called a junction in Windows land) in Vista or later:

mklink /J <Link> <Target>

Make sure the folder path that you use for the <Link> doesn't exist before creating.

(c:\<user>\AppData\Roaming\Bitcoin by default.)

Reference: Wikipedia

Drazisil

Posted 2013-04-06T16:33:16.317

Reputation: 348

How do I move my Bitcoin Core data file

Safely exit Bitcoin Core (bitcoin-qt|bitcoind).
Make a new secure backup copy of your wallet.dat.
Move you entire .bitcoin folder to the new location, except for bitcoin.conf which you must leave where it is in the existing .bitcoin folder.
Edit bitcoin.conf to add datadir={full path to new .bitcoin folder}.
Start Bitcoin Core and check properly that everything is alright, your wallet is accessible and, balances correct, etc.
Protect your USB disk and make regular secure backup copies of your wallet.dat.

The alternative if you also move your bitcoin.conf file is to find and edit every shortcut that starts any Bitcoin Core process wherever they may be (and any new ones you make) and add the following including every time you type it at the command line -datadir={full path to new .bitcoin folder}.

Note: If storage space is an issue you can also enable the prune option; enter prune={number=>551} in your bitcoin.conf. The number is in MB.

Willtech

Posted 2013-04-06T16:33:16.317

Reputation: 2 657

-1

That didn't quite work at first for me because some linux distros don't seem to like creating a symbolic link named “.bitcoin”.

I created a symbolic link named “test” in my home directory and then renamed that to “.bitcoin”

Using bitcoin-qt in Xubuntu12.04, this did not work:

ln -s /new/path/to/.bitcoin .bitcoin

Did work:

exited bitcoin-qt
moved “.bitcoin” to another partition
created a valid symbolic link to there named “test”
```
ln -s /new/path/to/.bitcoin test
```
renamed “test” to “.bitcoin”

bitcoiner

Posted 2013-04-06T16:33:16.317

Reputation: 11

1Could you please add some formatting and elaborate what you are referring to with "that"? – Murch – 2014-05-19T21:02:55.470

1It's not the distribution that prevents symlinks from working, usually it relates to the filesystem or the expectation of the bitcoin software that directories, paths and other URI data operates as expected. There are better solutions than symlinks, especially across multiple filesystem types. – Ben – 2014-06-04T10:01:18.643

Also, providing an answer for Linux when the OP clearly stated they were using Windows is pointless. – Ben – 2014-06-04T10:02:41.707

@Murch +1 That is constructive. – Garrick – 2014-09-04T19:08:23.203

1@Ben To be fair, having received the answer I was looking for, I'm not opposed to someone adding "I had the same problem on [linux] and here is how I solved it". That will add future value to someone. Unfortunately these instructions are barely coherent and lamenting "the instructions for [Windows] didn't work on my [Commodore 64]", no kidding. – Garrick – 2014-09-04T19:09:02.220

Bitcoin-Qt setup: Change block-chain file location, settings? documentation?

Answers

How do I move my Bitcoin Core data file