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Patch cache issue


3 replies to this topic

angp

angp
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Posted 08 June 2006 - 04:56

Hi,

Wonder if anyone can provide some advice on the patching issue.
My problem is, after applying the patch, the patched files will be cached in C:\windows\installer\$PatchCache$\Managed\{GUID}\... folders.

Why is it that not all patched files are stored in the above mentioned location?

Does anyone has any idea?

Thanks,
angp

Stefan Krueger

Stefan Krueger

    InstallSite.org

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Posted 09 June 2006 - 11:15

All files that are modified/overwritten by the patch should be cached. Unchanged files will not be cached.

angp

angp
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Posted 12 June 2006 - 03:04

Hi Stefan,

What is used to determine if the file is to be cache or not?
Based on the MSP file info?

Thanks,
angp

Stefan Krueger

Stefan Krueger

    InstallSite.org

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Posted 12 June 2006 - 09:32

Windows Installer uses its file versioning rules to decided whether a file should be updated/overwritten or not. If it's being overwritten the existing version is cached (unless a baseline version of this file already exists in the cache).