Re-installing OSX Yosemite - without original owner's Apple ID
Hi there,
I previously purchased an iMac 2015 second hand. Have had the computer for years. Recently wanted to wipe my old files etc from it, erased the disk, signed out from iCloud etc.
Now when I reboot, I am prompted with the disk utility / Install OS X screen. Once I connect to the internet, I am required to Sign in to App Store (presumably to DL the old OS X). I do not have the original owners Apple ID etc. and every time I enter my own Apple ID I am told it is an incorrect ID/password combination.
Any solutions?
Thanks,
Mike