Booting into Recovery Mode, from both the local HD and internet, but my Mac doesn't seem to support this?.I have wasted two whole days on this and am now desperate. I have the original disks (remember those things) that came with the computer but cannot install Snow Leopard. So, I decided to install Snow Leopard again. This was a disaster because some of my hardware and software no longer work! Previously this iMac was running Snow Leopard 10.6.8. I own an iMac that was recently updated in error by a family member (I've forgiven them).