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I have a bit of bitcoin lingering in an old bitcoin wallet (circa 2011). I just restored it from a backup but I can't seem to load it into bitcoin-qt.

If I launch the app, shut it down, the copy in my old wallet.dat file and re-open, it shows a zero balance.

If, instead, I shut it down, copy over the entirety of my old .bitcoin folder, and then re-open, I get an immediate segfault. How screwed am I?

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    I would copy only the wallet.dat; everything else should be unnecessary. Has your new installation finished syncing with the network? Have you tried -rescan? Also, was your old wallet.dat encrypted?
    – Nate Eldredge
    Jan 12, 2016 at 4:05

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You may find the following post relevant:

Wallet.dat (<0.4.0) format: retrieving Bitcoin, possible security concerns

This post details some of the steps you may need to perform to import the wallet into a current client, the biggest time consumer will be waiting for the full blockchain to sync with the current network.

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This guy used some tricks way above my basic pay grade but, maybe something will help you

Good Luck ,

https://medium.com/@simonvc/i-found-an-old-bitcoin-wallet-1aeb2f32387a

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  • Welcome to Bitcoin.SE! Whilst this may theoretically answer the question, it would be preferable to include the essential parts of the answer here, and provide the link for reference.
    – Andrew Chow ♦
    Mar 13, 2018 at 21:38

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