So, you want to move to OSX Lion.

Want to move to OSX Lion? Concerned? Be Safe:

  1. Make sure you have a Time Machine backup. If you don’t have a time machine backup, you’re a fool.
  2. Make sure your machine can actually run OSX Lion, “Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor”. No, your G5 will not run OSX Lion
  3. Use SuperDuper or CarbonCopyCloner to make a clone of your existing system out to another hard drive. Buy an external drive, or buy a drive dock and buy bare drives to plug into it. Docks are great for Time Machine backups too. Do not whine that hard drives are expensive. How much is your time worth to you?
  4. Buy and download the OSX Lion Installer. Don’t pirate it, for fuck’s sake. It’s only $30. Save a copy of the Installer somewhere safe, make an installable USB Key or DVD while you can.
  5. If you’re using Filevault, turn it off (and you should be, if you’re using a portable machine). It’ll make transitioning easier, and you’ll want to enable the “whole disk filevault” after Lion is installed.
  6. Install OSX Lion to the SuperDuper’d Drive and not your internal drive. Don’t do anything to your internal drive.
  7. (alternately: install OSX Lion to the internal drive, and disconnect your SuperDuper’d drive for safety. This is more work to get back to normal though for when your OSX Lion goes wrong.)
  8. Boot from the drive you put OSX Lion on (the SuperDuper’d drive)
  9. Find out exactly how many Rosetta apps you didn’t know you have. Start looking for replacements, since Rosetta is dead. PowerPC has been dead for years. Move with the times. I’m also looking at you, stupid developers still shipping PowerPC code
  10. Use it like this for a few days. Try out everything you normally use to find out it doesn’t work anymore. Keep track. Nicely ask developers to get OSX Lion versions out.
  11. If it doesn’t work out, don’t worry. Just boot from your untouched Snow Leopard drive, carry on as if nothing happened. If you fuck things up, use your Time Machine backup to save your ass.

Did that all turn out nicely? Fine. Your choice at this point:

  • Install OSX Lion to your regular drive
  • SuperDuper your external clone drive with OSX Lion back to your internal drive. Disconnect external drive and keep it safe.

Make sure to keep your Time Machine backup for when you need to roll back.

Never work without a net.