I installed ubuntu 17.10 using the firt method - ERASE AND INSTAL UBUNTU and didnt do any partition works during my installation. And now when i try to do a parttion using Gparted it is not even opening.
This site is not designed, nor intended for support questions. Please look at Finding Help for a list of your support choices (ubuntu-forums, irc, askubuntu, …)
I’ve moved this to the https://community.ubuntu.com/c/support-help-requests category because this site isn’t designed to take tech support questions. Sorry. I’d recommend using one of the official support channels listed on the Finding Help page.