Still, you may encounter a problem.
Information in this article applies to macOS Catalina (10.15) through OS X Mountain Lion (10.8).
This may manifest as a simple instability with occasional freezes or the system or applications lock up.
In the worst-case scenario, you may have problems booting, forcing you to considerreinstalling the OS.
Another problem is related to Apple’s incremental approach to updates.
This can result in infrequent system or tool freezes or the inability of an tool to launch.
A problem with a software update is infrequent, and most Mac users never see it.
However, if you have unexplained issues with your Mac, a defective software update could be the culprit.
A combo update only updates operating system files; it doesn’t overwrite any user data.
The downside to the combo updates is that these updates are huge.
The current macOS Catalina combo update download is just shy of 4.6 GB in size.
Then, trigger the update to plant the newest system on your Mac.
For example, the OS X 10.10.2 combo update requires thatOS X 10.10.0or later is installed.
Likewise, the OS X 10.5.8 combo update requires that OS X 10.5.0 or later is installed.
smack the link for the version you need.
Select thecombo update, which is not the same file as a regular update or client update.
If you don’t see the phrasecombo update, it’s not the full installer.
If the .dmg file doesn’t mount automatically, double-tap the downloaded file.
After the .dmg file mounts, you see a single installation package.
Double-tap the installation package to start the install process and follow the on-screen prompts.
