Hi There, I just wanted to know how much blocks are there which need to be synced until i can start mining?
And, if i got all of them, can I just Copy & paste the files to another PC and start mining there?
Ther are about ~2533479 blocks right now. And yes, you can copy/paste the ChainDB file… or download it from here: https://nkn.org/ChainDB_pruned_latest.tar.gz
ah thank you.
So after I’ve got all block i can start mining?
And is it enough to copy the folder 1:1 on a different machine or do i make an additional wallet everytime?
Yes when you have reach the recent block height you start mining.
You can copy the entire folder, i am not sure if you need to make another wallet, i think so… i only have one node in one pc, so wait for another response 
I am downloading all blocks with my raspberry.
it already took 2 days and I am at block 140583.
So long time to go…
if I download the chain on my pc with your link, is faster I think?
But how do I transfer this to raspberry and in what folder do I put this?
i don´t know anything about raspberry hehe, sorry
How doest it work om pc?