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Tips For A Successful Point Release Upgrade to OS X

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This article will cover some tips for successfully installing the new update to OS X; 10.5.7. Although the information contained within could be used for any OS X point release.  Please note that this information applies to point releases to a particular OS X level.  For example, going from 10.5.5 to 10.5.6 or 10.5.7.  It would not apply to a new release of OS X such as the upcoming Snow Leopard; 10.6.

This new update addresses some security concerns, among other things. From what I can gather the majority of Leopard users are having good success with the upgrade.  However, there are a fair number of users who are experiencing a number of issues.  According to the Apple support forums many people are getting the upgrade installed OK, but others seem to be having problems runing the gamut from issues with wireless devices to problems with iLife programs. There are also reports of issues with the download as a part of the Apple Software Update process and trouble rebooting the Mac after the install.

The best advice at this time is to use the combo update (http://support.apple.com/downloads/Mac_OS_X_10_5_7_Combo_Update)  instead of taking it from the software download feature of OS X. Apple always releases combo updates that can be downloaded and installed manually. I recently did a couple of upgrades on a Mac Mini and on an iMac using the combo update.

When I did the upgrade on the Mac Mini I followed some advice that I had received on the Apple forums.  I did a disk permissions repair (using the Disk Utility found in Finder->Utilities)  before I started.  After that I just installed the upgrade and it worked OK and so far I've not had any issues.  But it is a very plain vanilla setup.

I decided to do my iMac next.  This time I did it a little differently, again with information gleaned from the Apple forums.  I did the disk permissions repair first, but before I installed the combo update, I rebooted my iMac into Safe Mode (http://support.apple.com/kb/HT1455).  After the install was done and the iMac was rebooted normally, I did the disk permissions again. The iMac is a "production" system that has been in service for almost a year and has had a number of updates and third party software installed.  So far, I've not noticed anything amiss with this install either.

One person on the Apple forums noted that his install had the negative consequence of considerably slowing down his Airport connection. I had immediately checked to make sure that I still had wireless access to the Internet, but had not bothered to check the speed.  I logged onto a speed test site (www.speedtest.net) and checked the speed which seemed OK.  But I didn't have a benchmark to compare against.  So, I wirelessly hooked up my other iMac that still was running 10.5.6 to my Airport base station and ran the speed test on it and I got almost the exact same results.

I lastly did my personal iMac upgrade using the combo update, but without going into safe mode and without checking permissions and it seems to have worked OK as well.

I have not tested doing the upgrade through the software update process.  However, the consensus on the Apple support forum seems to be that the combo update is the way to go. It's only slightly more hassle than doing it through the software update and I am going to make that my standard way to do point release in the future.

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Author:jhyiesla
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Expert Comment

by:OIT_Desktop_Support
I would like to suggest that before any point release, one should run a utility repair/check, along with having a recent backup (Time Machine) and using a 3rd party application (recommend latest versions of Disk Warrior or Drive Genius) to repair any directory/drive issues that Apple's Disk Utility doesn't. I generally reserve permission repairs after any software update (from Application vendors like Adobe, Microsoft, Apple...).
Note: when you boot up into Safe-Boot mode (Holding shift key at power up), it flushes out font & loader caches, and does a directory check.
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Expert Comment

by:Cronock
Also, the reason people suggest the combo updater over the incremental update is that the combo updater willl replace more files in the OS that could have potentially become corrupted or misconfigured over time.  I usually use it as a simple troubleshooting step for just about every software-related problem.
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