Ive been trying to install the desktop version ubuntu 18.04.02 on a pc for the last few days but every time the installer fails at the point where it starts copying files to the target hdd. I get an error message saying 'the file on the target drive does not match the installer, this is often due to a faulty hdd or dirty cd'. The pc is a gigabyte motherboard HD3 85 and intel i7, with 16 Gb ram.The hdd is a brand new WD Blue 1TB.
There is nothing obvious in the bios settings that would cause the upset. I have also tried the install with a new 1TB Seagate but no success. Ive tried using different startup thumbdrives both usb 2 and 3, and dvd but always the installation fails. Im at a loss why it keeps failing. Is there a bug with the installer?