The point upgrades mostly went without problem until 10.7.4.This caused a lot of issues with sleep and power management, requiring finding the right settings in the BIOS to get everything working reliably.Both backup drives were tested after the backup finished to make sure they were working correctly.
There is a standalone "Security Update 2011-004" available that addresses a lot of the same issues, but it is only for 10.5.8.
Mac malware is starting to get some real momentum this year, so it's high time to start taking these security updates seriously.
After hours of testing and a ton of help from Nathan in the comments, I was able to boot 10.6.8.
Had everything gone according to plan, you’d be reading an update guide right now.
Once I completed a backup- always necessary before any update or system change- I removed Sleep Enabler.kext, installed the update, and rebooted.
Though this process worked countless times before, this was not the case with 10.6.8; it wouldn’t boot past Chameleon.There are plenty of excellent reviews of Mac OS 10.8 Mountain Lion, so this post will focus on the steps taken to upgrade my fully working 10.7.4 system to 10.8.This is not intended as a complete install-from-nothing guide, requiring a working 10.7.x system to start with. My Gigabyte P35-DS3R/Q6600 system was re-purposed at the start of 2012, and replaced with the following: This was setup with Mac OS 10.7 Lion as a fresh install.Unfortunately, 10.6.8 was- and still is- proving to be quite troublesome.10.6.8 is running very slowly and my WLAN card (for Wi-Fi) is no longer recognized.Crazy but true.i was able to update my Dell Latitude 2100 to 10.6.8 with no issues. so far all seems to be ok, wireless, sound, 1366x768.. In 10.6.8 Apple has (once again) bundled vital security patches together with unneeded changes in functionality and compatibility.