Patching a Patched Installation

[amonteiro3]

I'm currently testing out patches to see how they're going to work. I've encountered some difficulties, and a small comment in an old thread seems to shed some light

In: http://www.installaware.com/forum/viewt ... f=2&t=6035

Andy Mills says "You can't apply a patch to an already patched product."

So if I have version 1.0, and I patch it to 1.1, there is no way to patch that installation to 1.2?

What is the recommended strategy for applying multiple patches to a single installation? It seems rather strange to me that you're limiting your patching ability to only one patch.

Any help would be appreciate.

Thanks,

Andy

[giaviv]

Andy,

There will be no problem at all patching 1.1 to 1.2. Please see this tutorial:
http://www.installaware.com/installaware_patching.pdf

[amonteiro3]

I have read that, and I'm able to create a patch for 1.1 to 1.2. I actually created the 1.2 patch to be able to patch from both 1.0 and 1.1 to 1.2.

What I tried was to use the auto-update feature. My installation of 1.0 was able to detect a patch was available to 1.1, download it and install it.

However the auto update doesn't detect the 2nd patch and take my installation from 1.1 (which is a patched 1.0 -> 1.1) to 1.2.

I suspect if I tried a complete 1.1 install, and applied the patch it would work fine. However I'm trying to take my patched 1.0 (patched to 1.1) to 1.2.

That's when i found the quote from Andy Mills saying "you can't apply a patch to an already patched product".

Does that make for a better explanation?

[giaviv]

Hi,

I think that there is a little confusion with the way you perceive patches vs updates.
Patches are separate from version - they are intended to PATCH an existing version.

For example, if I create an application (say V1.0), and later discover that there is a crucial bug with it, I will issue a patch that will still leave it at 1.0, but will fix the issue.
When I will create another release of the application, perhaps introducing new features in addition to fixing issues, it will be V1.1, and will necessitate an update, not a patch.