Tomorrow, Apple’s making the Public Beta of Yosemite available. Unless you are smarter than your average bear, more resilient than your typical feudal lord, more capable of crisis management than a battle-hardened PR specialist for the oil industry, and more paranoid about data loss than your average healthcare system DBA, I do not recommend installing it on your primary system.
IF you choose to ignore me, and IF you do it anyway, you can play around with some of the new features.
However, you need to do at least this much before you can upgrade:
- Make a FULL DISK backup of your machine before installing Yosemite. Not a Time Machine backup. Not a CrashPlan backup. A full disk backup. If you don’t know how to do this, ask, but if you don’t know how to do this, you should not install the Public Beta.
- Unplug that disk and put it somewhere safe.
Okay. I feel better now.