<p>After minimal interest and no suggestions, I decided to uninstall again, and delete the Roaming &gt; Bitcoin folder and data. Re-installed Bitcoin Core, and am now downloading the chain again.</p>

CC BY-SA 4.0
2022-05-20T01:19:44.133Z
2022-05-20T01:19:44.133Z
Rogue_Dave
<p>I was attempting to return from pruned to unpruned chainstate. Unchecked the pruned box. Core cautioned this would require re-download of the blockchain in its entirety. OK, fine. Shutdown Core to re-start and it failed, repeatedly. Since I don't know how to -reindex, I uninstalled Core, presuming ALL data, files, directory structures, etc., associated with the program would be removed or deleted. Nope. Found the following data and structures dating to first installation:
<a href="https://i.sstatic.net/xMtuD.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/xMtuD.jpg" alt="Roaming Data Folder including (pruned) blocks" /></a></p>
<p>From the debug.log:</p>
<p>LoadBlockIndexDB(): Block files have previously been pruned</p>
<p>: You need to rebuild the database using -reindex to go back to unpruned mode.  This will redownload the entire blockchain. Please restart with -reindex or -reindex-chainstate to recover.</p>
<p>should not be overwriting a chainstate</p>
<p>Error: Error opening block database</p>
<p>Shutdown: In progress...</p>
<p>If I uninstall Core again, and then Delete the folders: <em>blocks &amp; chainstate</em>, will this force another download? Or do I need to Delete the entire Roaming&gt;<strong>Bitcoin</strong> folder?</p>
<p>Thanks</p>

<synchronization><reindex>
Unprune & Re-Download Failed. Core asks for a "-reindex" due to chainstate, then fails
Rogue_Dave
# Unprune & Re-Download Failed. Core asks for a "-reindex" due to chainstate, then fails

(Asked by: username_0 on 2022-05-19)

I was attempting to return from pruned to unpruned chainstate. Unchecked the pruned box. Core cautioned this would require re-download of the blockchain in its entirety. OK, fine. Shutdown Core to re-start and it failed, repeatedly. Since I don't know how to -reindex, I uninstalled Core, presuming ALL data, files, directory structures, etc., associated with the program would be removed or deleted. Nope. Found the following data and structures dating to first installation:
[![Roaming Data Folder including (pruned) blocks](https://i.sstatic.net/xMtuD.jpg)](https://i.sstatic.net/xMtuD.jpg)

From the debug.log:

LoadBlockIndexDB(): Block files have previously been pruned

: You need to rebuild the database using -reindex to go back to unpruned mode. This will redownload the entire blockchain. Please restart with -reindex or -reindex-chainstate to recover.

should not be overwriting a chainstate

Error: Error opening block database

Shutdown: In progress...

If I uninstall Core again, and then Delete the folders: *blocks & chainstate*, will this force another download? Or do I need to Delete the entire Roaming>**Bitcoin** folder?

Thanks

**Tags:** synchronization, reindex


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## 1 answers

### Answer by username_0 on 2022-05-20. Score: 0

After minimal interest and no suggestions, I decided to uninstall again, and delete the Roaming > Bitcoin folder and data. Re-installed Bitcoin Core, and am now downloading the chain again.


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