How to export a wallet such private key or anything to save or moving my wallet to another device? i have a habit to reinstall my windows frequently.
If you use a Windows wallet, there are 2 ways.
1. Copy your wallet.dat file (do this when the client has finished working). After changing the system/computer, overwrite the wallet.dat file with your own, which you copied and saved.
2. Extract all private keys. Do this for each of your addresses using the Client Console.
dumpprivkey your_address
After changing the system/computer
importprivkey your_privkey