Cannot install OS after erasing disk for resale
After numerous tries I am still not able to re-install the OS (El Capitan) on my Late 2015 iMac after erasing the SSD for resale. Right now I'm getting the question mark (?) symbol. If I restart in "Recovery Mode" I was able to erase disk and run first aid without any issues. If I try to re-install the OS it goes through the download process, appears to have worked, then when it should restart it tells me "OS could not be installed on your computer." This has been a nightmare as I had someone wanting to buy this Late 2015 iMac. Please help!