And in order to create a custom windows 11 ISO, we need convert install.wim to install.esd and rebuild a brand new Windows 11 ISO from install.esd. Apparently when you are downloading windows 11 from Microsoft website all the components are compressed into an install.wimfile. There are two types of file extensions you should be familiar with before creating a custom windows 11 ISO image. Create Windows 11 Install USB from Custom ISO.Remove Unwanted Apps and Features from Windows 11 Image.Convert install.wim to install.esd with WIM Converter.Extract Windows 11 ISO with MSMG Toolkit.Before going ahead, you need to know what is WIM and ESD extentions. This will remove unnecessary apps and reduce the size of install.wim file. These are my reasons for creating a custom windows 11 ISO image. You have to split install.wim file into small ones to get it to work.

We simply call that application bloatware.Īnother major issue a large Windows 11 ISO brings up is that the install.wim file is too big to be fit on a FAT32 partition, making it extremely hard to make a Windows 11 bootable USB for installation. Not only for that but it is also going to reserve storage for those apps. Because of these apps is using computer resources heavily and causing performance problem. Microsoft has a habit of inserting a lot of useless application in their main operating system. This might be the first question that comes into your mind. 23, 2021 Why do you want to create a custom version of Windows 11 ISO image?

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