Date: Monday, March 22nd, 2010, 04:16
Following a flurry of developer releases for the upcoming Mac OS X 10.6.3 update, a public release seems imminent with sources guessing it could be released today or this week.
With that in mind, the cool cats at CNET have offered the following preparation steps to take prior to the update:
Always back up your system before updating it. The best practice is to perform a full and restorable backup by using Time Machine or a cloning system (SuperDuper, Carbon Copy Cloner) and then testing the backup to be sure you can access it in the event of an update failure.
To test your Time Machine backup, boot to the OS X installation DVD, select your language, and choose the option to restore from backup that is in the Utilities menu. In the restorable backup list, you should see the most current backup you made. To test a bootable drive clone, boot to it either by selecting the clone in the Startup Disk system preferences and rebooting, or by holding the Option key at start-up and selecting the drive from the boot menu.
Once you have confirmed the backups are healthy and have booted back to your main hard drive, unplug the drive from your system (if you can–some people use internal drives for Time Machine) or unmount it at the very least (just drag it to the trash) so the system will not interact with it during the update. Then proceed with the update.
Clear up current issues:
If you are having major problems with your current OS installation, try addressing them first. While OS updates can be the solution to many problems, if you are having major stability problems (i.e., random crashes, odd noises, inability to authenticate) then be sure to address them before applying the update.
Run general maintenance:
At the very least, run some general maintenance on the system before updating. For the most part you can do this by booting into Safe Mode (which runs a few maintenance routines at start-up) and then running a permissions fix using Disk Utility. In addition, you can also clear caches and other temporary files using programs like OnyX, Snow Leopard Cache Cleaner, IceClean, Yasu, and Cocktail.
Unplug peripheral devices:
If you have external USB or Firewire devices, unplug them from your system before updating. While it is rare that peripheral devices interfere with installations and updates, it can happen especially upon the first reboot as the system reconfigures drivers and boot caches. Once you have installed the update and have completed the first boot, then plug in your devices again.
This is the most common method of updating, and will download the minimum number of files needed for your system and current software setup. It is the fastest and easiest method, but will keep a large number of the unchanged files on your system.
Standalone Delta update:
As with other versions of OS X, Apple will provide the 10.6.3 update as a standalone installer. This may be a larger download than what is available via Software Update because it includes update files for all computer models and software setups. It will be available at Apple’s support downloads page, and we will also provide a link to the delta updater when it is released.
Using this update allows you to take extra recommended precautionary steps during the installation, such as booting into Safe Mode and installing when unplugged from the network to avoid any interruptions.
Standalone Combo Update:
Similar to the Delta updater, you will have the option for the full Combo update. This update will contain the full set of files that have been updated since the OS X 10.6.0 release. Using it to install the update will ensure all updated files are replaced, even if they have not been changed since 10.6.2. Using the combo updater is a fairly standard troubleshooting step that can help fix various OS problems, and is a good way to keep your OS installation as fresh as possible.
As with the delta update, we recommend you install this when booted to Safe Mode and after running standard preparatory maintenance routines such as permissions fixes.”
Stay tuned for additional details as they become available and let us know if you happen across any tips, tricks or fixes during your update.