I have upgraded the operting system on my iMac to Yosemite, now the superdrive dows not work. How do I downgrade the operating system? Do I erase the hard drive and reload, or is there a more simpler way?
I have upgrade my older iMac to Yosemite, now the superdrive does not work. Should I down grade the system software? Do I need to erase the hard drive and start again? Any thoughts would be appreciated. Thanks
