I have an old iMac A1224 where the hard drive has died. I have a new SSD drive for it, but can't determine how to boot or load an OS on it. I have both another Mac and a Windows PC, so I could use either of those to do what I need to do. I just don't know what "it" is. I do not have the original media. I would love to somehow load a bootable image directly to the hard drive if that's an option, and then just install the drive, and boot up. Looking forward to a smart person's answer.