Don't understand how node system works: if there are i.e. 10 QT running- so they can connect to each others coin network should work. And I don't get - how our QTs can't connect with hardcoreminers, that are online and mining?.. Or I don't understand how node network works?
No, actually, hardcoreminers has it's own node running. where all the miners are mining. Somehow those who are mining there probably have a peers.dat file that contains the hardcoreminer's node. So those with that node will be able to sync. We would need one node to sync our nodes.
I wish I knew that before reformating my HDD, I only backed up wallet.dat