Slow Sync Issues with Bitcoin Core

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sage23Senior Member
Posts: 4 · Reputation: 1996
#1May 10, 2026, 10:29 AM
Hi all, trying to sync my node with Bitcoin Core but it crashed while loading. Now it just shows "replaying blocks: 0%". I don’t wanna download everything again since it was stuck between block 750k and 800k. Here’s part of my debug log, any ideas?
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matrix2021Full Member
Posts: 92 · Reputation: 612
#2May 10, 2026, 02:52 PM
Looks like your shutdown messed up the database flush. It’s reapplying state changes from block data, which is super I/O intensive. If your disk is slow, it’s gonna drag. Are you using an external drive? That could definitely be slowing things down.
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Posts: 83 · Reputation: 179
#3May 11, 2026, 09:07 PM
I’m guessing you’re on Windows, right? I quit trying to run a node on that OS. Prefer Linux for Bitcoin Core… I use Ubuntu. You could dual-boot with Windows if you wanna keep both, but running on Windows usually leads to all sorts of issues.
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0xGasMember
Posts: 292 · Reputation: 52
#4May 11, 2026, 11:38 PM
Yeah, I get that. I had similar issues with my external HDD recently. Ended up re-downloading everything, but I found a way to speed it up by shifting some folders to my SSD and making links to them. It worked pretty well, though I’m still on Windows, lol.
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mr_f4rmFull Member
Posts: 1 · Reputation: 718
#5May 12, 2026, 02:55 AM
I’ve been stuck on "Rolling forward..." since my last restart, and I’m not even on Windows! Gonna take me over 80 hours to catch up if no new blocks show up. I thought I did everything right this time, used 'bitcoin-cli stop', but it didn't work out. Why hasn't this been fixed yet?
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