<p>Find where you wallet file is located which will be different depending on which operating system your using. Then replace the new <code>wallat.dat</code> file with your old one. If you haven't downloaded the block chain yet, then just start up Bitcoin-qt and once it downloads your coins will be in your wallet. Otherwise you will need to re-scan the blockchain at which point your wallet will have your bitcoins in it. </p>

CC BY-SA 3.0
2013-11-06T19:51:05.963Z
2013-11-06T19:51:05.963Z
Loourr
<p>I had a Bitcoin wallet with come coins, backed it up (have the .dat file and a .csv file) but recently had to reinstall my Operating system which sadly wiped all my programs.  Now I have a new wallet but do not know how to access my coins using the .dat...  any hints?  </p>

<wallet>
How to use Backup .dat?
silile
# How to use Backup .dat?

(Asked by: username_0 on 2013-11-06)

I had a Bitcoin wallet with come coins, backed it up (have the .dat file and a .csv file) but recently had to reinstall my Operating system which sadly wiped all my programs. Now I have a new wallet but do not know how to access my coins using the .dat... any hints?

**Tags:** wallet


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## 1 answers

### Answer by username_1 on 2013-11-06. Score: 1

Find where you wallet file is located which will be different depending on which operating system your using. Then replace the new `wallat.dat` file with your old one. If you haven't downloaded the block chain yet, then just start up Bitcoin-qt and once it downloads your coins will be in your wallet. Otherwise you will need to re-scan the blockchain at which point your wallet will have your bitcoins in it.


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