GAI: can you use an external hard drive to copy btc blockchain and transfer to another computer?

You can use an external hard drive to copy the Bitcoin blockchain and transfer it to another computer. You'll need to locate the data directory containing the blockchain database, then copy the entire directory to the external drive, and finally transfer the drive to the new computer. The data directory's default location is C:\Users\<YourUsername>\AppData\Roaming\Bitcoin on Windows. Make sure to shut down the Bitcoin Core wallet on both computers while copying the files to prevent data corruption, according to the Bitcoin Wiki. 

Here's a more detailed explanation:

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Bitcoin CryptoCurrency Table of Contents TOC

• —– Table of Contents —–
• Private: Bitcoin CryptoCurrency Table of Contents TOC
• Chapter List Search:  fzHKZuICbvI9x1NdfKx3
•  
• —– Theory ——
• History of Online Money and Cryptocurrency Before Bitcoin
• Satoshi Nakamoto’s paper on Bitcoin
• What is BitCoin Mining?
• Bitcoin Mining Pools
• Why Bitcoin mining ASICs will not crack your password
• How to Set Up Your Own Bitcoin Mining Pool
• BitCoin Mining Economics Estimation
• SpreadSheet Learning: Mining Bitcoin with Excel or Open Office Calc
• SHA 256 Secure Hashing Algorithm
• BitMain ASIC Miners – What other coins will they work with?
• Top 6 Cryptocurrencies With the Best Technology
• OverView of Bitcoin System in Series of Videos
• Bitcoin Mining Code – Github
•  
• —– BitCoin Usage —–
• How to Cancel Unconfirmed Bitcoin Transactions
• Copy BTC Bitcoin Blockchain Using an External Hard Drive and Transfer to Another Computer
•  
• —–Hardware Purchase —–
• Buying BitCoin Mining Hardware Directly from BitMain
• Remittance Bank Payment Wires to Bitmain Blocked? A Discussion with MrX
• Mining Hardware Companies
•  
• —–Bitcoin Hardware—–
• BitFury BitCoin Mining Container and IC
• Tracking the Progress and Practicality of Introduction of Semiconductor Products
• Custom BitCoin Mining Hardware
• Server Power Supply Suitable for Powering Bitcoin Miner Antminer S7 S9
•  
• —–Bitcoin Software —–
• Bitcoin Mining Software
• BitCoin Core Software
• BitCoin Core Wallet – Dumping Your Private Keys
• Bitcoin and Other Crypto Wallet Notes
• Private: Installing Bitcoin Core on Ubuntu Linux
• Private: Bitcoin Core Full Node Running with Fiber Optic Router with No Port Forwarding Menu
• Bitcoin Core I/O Error Stopping Out the Blockchain Download
• BitCoin Installation on Linux
•  
• —– BitCoin Miner Software Setup —–
• BitCoin.com Mining Pool User Naming Format
• Setting up a BitMain AntMiner S3 for Mining
•  
• —– Other Related CryptoCurrency Topics encountered —–
• Private: Claiming BCH Bitcoin Cash Blockchain Equivalent for BTC Owned Before the Fork
• Advertising Industry Dedicated CryptoCurrency

End TOC 

Bitcoin Core is popping errors

Research Links

• GAI: bitcoin-core IO error how to fix
• StackEx: When should I use -reindex-chainstate and when -reindex
• windows bitcoin core where is blockchain stored?  — C:\Users\YourUserName\AppData\Roaming\Bitcoin

Note:  What is "reindexing"

-reindex:

• wipes the chainstate (the UTXO set)
• wipes the block index (the database with information about which block is where on disk)
• rebuilds the block index (by going over all blk*.dat files, and finding things in it that look like blocks)
• rebuilds the chainstate (redoing all validation for blocks) based on the blocks now in the index

-reindex-chainstate:

• wipes the chainstate
• rebuilds the chainstate using the blocks in the index you had before

The latter should be strictly faster, as it does not need to rebuild the block index first. Perhaps the progress bar during reindex confuses you: that progress is only for the rebuilding of the index. The recreation of the chainstate happens after that rebuild is completed.

You should use -reindex only when you were running in pruning mode, or if you suspect the blocks on disk are actually corrupted. Otherwise, when you only suspect corruption of the chainstate (which is far more likely), use -reindex-chainstate

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Bitcoin Wallet Operations

Wallet Links

• Bitcoin.org: Bitcoin Core Wallet
• Bitcoin.org:  Types of Wallets and their Function
• Bitcoin Guides  –  centered around Bitcoin Core Wallet.
• Moving Bitcoin Core, how to change the directory where it stores the blockchain?
•  
• Google: software bitcoin wallet software
•  
• How to import your Bitcoins to Electrum
• Google: software bitcoin wallet software

Bitcoin BlockChain restoration and porting

• Google: bitcoin core move blockchain to another computer
• Is it possible to transfer blockchain data from one machine to another?  Yes.
• How to use bitcoind without downloading whole bitcoin core(500+ GB)   – this page talks about conf settings.

Wallet Porting

• Google: bitcoin core how to restore wallet backup

Notes

Using Wallet. dat File:

    Locate your wallet. dat file on your computer.
    Copy it into the Bitcoin Core folder on your computer.
    Open the Bitcoin Core Wallet, and it should recognize the wallet and restore access?.