I have a bitcoin wallet on my PC but I just recently downloaded the MAC version of it. I would like to initialize it with the blockchain from my PC so that I don't have to download it all over again. Is that possible?
Copy over your
%APPDATA%\Bitcoin directory to
Your AppData directory should be:
C:\Documents and Settings\YourUserName\Application data\Bitcoin (XP) C:\Users\YourUserName\Appdata\Roaming\Bitcoin (Vista and 7)
If not, you can always run
explorer %APPDATA%\Bitcoin in Command Prompt (Super-R, type
cmd, hit "Run") to find it.
Just to avoid people missing the key information about the wallet and blockchain - one is very private information and one is public information. In copying as said here: How to transfer only the blockchain to a friend's computer?
"To be more specific, you need to transfer the blocks and the chainstate directory. Don't transfer the database directory as it may contain remains from wallet.dat such as private keys. – rumpus"