Leopard not updating
Our recommendation: Start From Scratch: Here’s what you should do: wipe your drive and start from scratch.
The writing was on the wall for Snow Leopard in December 2013 when Apple patched Safari for OS X Lion, Mountain Lion, and Mavericks without thinking about their older sibling.Snow Leopard had received a security update in September of 2013, just two months earlier.To be clear, Snow Leopard does not appear to have the "gotofail" bug -- the SSL/TLS vulnerability allowing secure web sessions to be hijacked with a man in the middle attack -- which was patched in Mavericks this week and in i OS before that.However, when you look at the installed base of OS X, as the folks at Computer World have done, the fact that this particular high-profile security issue wasn't a Snow Leopard issue isn't really that comforting.According to the report, 19% of Mac users are still sticking with Snow Leopard, leaving roughly 1 in 5 Macs vulnerable to these holes in security.When it comes to upgrading to Snow Leopard, you’ve basically got two options: upgrade Leopard or wipe the old OS and start fresh.
Upgrade: This is the easiest option — simply upgrade.
Give it a whirl, and you may be just as surprised as we were to learn that your ‘Downloads’ directory is taking up half your hard drive. Create a Reliable backup To create a bootable backup of your main drive there is only one choice, Carbon Copy Cloner, and it’s push one button simple.
Just remember to make your backup drive bootable, you will have to completely wipe your destination drive.
Once CCC is done, reboot your Mac with your external drive still connected, holding down the option key to boot from the backup drive.
Make sure everything boots up, poke around a bit, make sure everything seems to be working.
Of course ‘painless’ is a relative term in Cupertino, and if our experiences upgrading from Tiger to Leopard are any indication, this option leaves us a bit wary.