NVMe Hotfix

To enable NVMe support to Windows 7 you need to add KB2990941 and KB3087873

OSBuilder Catalog XML

The issue is that this Hotfix is not available from Microsoft anymore, which explains why it is not automatically added to OSBuilder. The only place I could find the MSU file was on a Third Party website.

To add these Hotfixes to OSBuilder simply download the attached XML file and save it in C:\OSBuilder\Content\Updates\Windows 7 x64 7601

For Windows 7 SP1 x86, save this file in C:\OSBuilder\Content\Updates\Windows 7 x86 7601

Simply run another Update-OSMedia -DownloadUpdates to get the added Hotfixes and you should be ready to go

WinPE

For Windows 7, only the Servicing and Cumulative Updates are applied to WinPE. For the NVMe Hotfixes, I change the Severity of the update to WinPE. OSBuilder will automatically import these Microsoft Updates in WinPE for Windows 7 as long as this value is present.