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SCCM Operating System Upgrade Package Size?

Alex Wedlake 40 Reputation points
2025-01-29T13:53:47.8566667+00:00

Hi all,

Quick question regarding Operating System Upgrade Packages within SCCM - Why are they so large? The source folder is around 6GB (extracted from Windows 11 24H2 .WIM), and I have also specified when importing to just use the Enterprise version of the .WIM but for some reason, every time I try to create the image the size ends up nearly 20GB. Is this correct or am I doing something wrong?

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Microsoft System Center
Microsoft System Center
A suite of Microsoft systems management products that offer solutions for managing datacenter resources, private clouds, and client devices.
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Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
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  1. AlexZhu-MSFT 6,426 Reputation points Microsoft Vendor
    2025-01-30T02:37:11.69+00:00

    Hi Alex,

    It seems this is normal. No extra action is required.

    Below is an example of win10 image, the "displayed" size is almost 20GB. Actually, it's the size after the .wim is extracted, that is, the final size in the client computer, not the size of the .wim itself.

    image

    Regards,

    Alex

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