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I have the Bitcoin client installed on my Windows PC, but I want to set up a savings wallet with better security that I access with an Ubuntu live CD. I don't want to have to download the entire blockchain though - can I use my blockchain from Windows in the Ubuntu OS?
And how can I copy the blockchain from my existing Windows client installation to, say, a USB stick for use by an Ubuntu live CD, then into the Bitcoin client folder?
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You can find the blockchain in this directory:
C:\Documents and Settings\YourUserName\Application data\Bitcoin (XP) or C:\Users\YourUserName\Appdata\Roaming\Bitcoin (Vista and 7)
As blk0001.dat and blkindex.dat. Copying those files to a proper folder on your Ubundu (~/.bitcoin/) should spare you from redownloading the entire blockchain.
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bitcoin data dir link in the wiki: https://en.bitcoin.it/wiki/Data_directory ... shows where all the data files are located, the "a proper folder" link from ThePiachu 's post seems to have died since.
This answer is obsolete. – Stéphane Gimenez – 2013-11-19T09:46:04.147