Windows: Extract image from wim

Hi,

the install.wim file from newer Windows 10 Consumer DVDs is greater than 4GB and exceeds the maximum filesize of a fat32 formated USB Stick. Therefore the simplest way to created a bootable USB device is no longer possible.

Install.wim contains multiple Versions of Windows 10. It is possible to shrink the file under the 4GB border: Just extract the version you need from it. Its not requiered to reformat (with a FAT32 boot partition and a NTFS Data Partiton) the stick by Rufus or such tools.

Get a list of all available versions, get determine the index of the version you want to install.

D:\> dism /Get-WimInfo /WimFile:H:\sources\install.wim

And write a new install.wim by exporting the version selected by index.

D:\> dism /export-image /SourceImageFile:H:\sources\install.wim /SourceIndex:1 /DestinationImageFile:D:\Temp\install.wim /Compress:max /CheckIntegrity

Michael

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