While trying to create either a new configuration or creating a new PXE boot option through Boot Disk Creator you notice a couple of different issues.
If you try to add a NIC driver, you receive a message stating that Bootwiz is unable to add the driver
When you're on the Optional Components page you notice that only three options are available instead of the normal 20 to 30 that are normally there
In both situations you are still able to successfully build your boot option. You'll get an error when trying to add the NIC driver but that doesn't stop the build process from working.
GSS 3.x code
You'll see an error stating that Bootwiz is unable to add the NIC driver if you try to add a driver. Even though the driver is just fine. Other than that, the missing optional components section will not give any error. It will simply be missing nearly all the optional components.
It has been determined that these issues are caused by remnants of a boot.wim file being mounted or partially mounted on the box. This is preventing Dism from performing the work it needs to do to build the new configuration.
Try running the following commands to determine if this is the case.
Open a command prompt (Run as Administrator)
Run: Dism /get-mountedimageinfo
Run: Dism /get-wiminfo /wimfile:<Install Media Source>\<filename>.wim
Run: Add "/index:X" with X being 1-4 indicating the OS from the output of previous command
If an image is mounted
Run: Dism /unmount-wim /mountdir:<Mount Dir Location> /discard
Run: Dism /get-mountedimageinfo (Only the operation completion message is displayed)
At this point you can try to add a NIC driver or build a new boot option. The optional components should also be back now.
Other command line arguments that may help with the clean up:
Dism /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-Image /CheckHealth
Dism /Online /Cleanup-Image /RestoreHealth /Source:<files location of required source> /LimitAccess
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