or somehow the database folder disappeared.
As I said, on a clean shutdown, the database folder is deleted by newer versions. 0.19 is new enough.
Yes, I have observed this behavior, and now it makes sense. It explains why there is no database folder. The wallets work when I loaded them in Knots 29, with labels and all. The HD logo has a crossing line on it indicating it's not an HD. So the experiment may not have worked because Tails did not properly shut down the wallet and I also did not copy the database folder. But the actual wallet did work thankfully, now I need to plan on a watch-only setup.
I will also test the migration tool with some backup.An observation: When I loaded the wallet.dat file on Knots 29, the sha256 checksum changed. What changes are made to the original file?
This one:
~/.bitcoin/database
He wrote it gets deleted on (clean) shutdown. I have that directory.
I'm running Core 29.1 but I don't have it. I guess it's an old directory that's not used anymore? The reason I'm asking is that I wanna make sure that keeping simply the
wallet.dat for backup is enough.
When you load a wallet, you should see a database folder, but when you close it, it disappears. If you don't see it, then im assuming this behaviour happens with dbd (berkeley) wallets and not sqlite wallets (more modern ones) which never need that database file.
And perhaps really old ones (2013) but that never went beyond the old versions (because I did updates on Bitcoin Core, I assume some updates were applied along the way on the wallet file as I updated) always need that database folder and it's never deleted? Not sure about that. On the experiment I did with the 0.8.x version, there was a database folder, even after closing it. I did not see any errors, but I think I also didn't the see the "Bitcoin is clossing please wait..." message, but I don't remember if that message was there back then. But doing this on Tails may not be reliable anyway, I just didn't want to install these binaries so used Tails for it.