![]() ![]() ![]() If anything has gone wrong with any of the previous updates, running the combo will generally clean up the problem, while a delta might leave it broken. It's simplest to just carry the combo update and not worry about the deltas as well, since you can use the combo anyplace the delta would be appropriate. I update a lot of computers, so to save time I carry the latest updates on my tools HD. But some people (myself included) tend to prefer the combo, for a couple of reasons: If you have a Mac that's running the next-to-latest version and want to update it, the delta is technically all you need. 10.8.1 or 10.7.1, there's no real distinction between delta and combo, so Apple only publishes a single update form.) (Note that for the first update to a major version, e.g. Similarly, the 10.7.5 combo update can be run on anything from 10.7.0 to 10.7.5. A combo update containing all of the changes since the original release of that major version, and therefore can be used on anything from the same major version.įor example, the 10.8.2 combo update can update from either 10.8.0 or 10.8.1 it can even be reinstalled on a system that's already running 10.8.2. ![]() A delta update containing all of the files that changed in the latest update, which therefore can only upgrade from the immediately previous version.įor example, in order to install the 10.8.2 delta update, your system must already be updated to 10.8.1.10.8.1 -> 10.8.2), they generally release the update in two forms: When Apple releases a minor system version (e.g.
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