How to delete Safely restore a MacBook when activation lock is turned on
Hello, so this is the deal, i bought an used MacBook Pro and when I received it I made sure that the owner signed out from iCloud, once he did that i brought the Mac to home and erased the disk through the Internet Recovery Utility, but now it says "Activation Lock" and I have to put the owner's Apple ID and password to re-install de OS.
I sent a message to the seller and he said that he could do that for me tomorrow, but i want to make sure to get rid of everything related to previous owner, so my question is: once he puts the Apple ID and Password, and then I re-install a new OS, Will i have to do something else to delete previous owner's information?
Thanks in advance for the help you could provide.
MacBook Pro with Touch Bar