Apple ID and password when upgrading IMac 2011 to high sierra
I bought a used iMac 2011 with El Capitan OS. The previous owner cleaned the data and reset the admin password but not erase the iMac. Question is during upgrading to High Sierra, the system required to enter Apple ID and password. Can I enter my apple id and password or the system needs the previous I am Not the original owner of the owner info to allow installation to be continued. Thanks .