Creating a Windows 8.1 reference image
Building the Perfect Windows 8.1 Image
Bump up the speed using a VM with multiple vCPUs
Capturing a 4 GB image with MDT typically takes 40 minutes on a virtual machine with 1 vCPU, but only 25 minutes when assigning 2 vCPU’s.
Bump up the speed using DISM instead of ImageX
Of the above numbers, when using MDT with the default scripts, about 15 minutes is just scanning the file system (bug in ImageX which MDT is using). You can use DISM instead, which is much faster, see be below post by Mikael.
Nice to Know – Switch from ImageX to DISM in MDT
Another big thanks to Ashley 🙂