Thank you for your answer.
I don't have access to old pc and I don't remember the old version..
How to know if the old one was an hd wallet? I'm now using the latest version and I can't find anything about that.
If you look at the bottom right corner of the Bitcoin Core window, do you see the HD icon?
![](https://ip.bitcointalk.org/?u=https%3A%2F%2Ftalkimg.com%2Fimages%2F2023%2F11%2F15%2Fzebmf.png&t=665&c=j1DN5-gnwSX1ow)
If you do, it is an HD wallet... If you don't, it's an "old style" keystore wallet.
Also, an HD wallet will return "hdmasterkeyid" when you use the "getwalletinfo"...