A. Once you've installed the Windows Automated Installation Kit on your machine, you can use DISM to get information with its /get-wiminfo switch, as shown here.

C:\>dism /get-wiminfo /wimfile:"d:\OS Images\Windows 7 Ult 64-bit\sources\install.wim"

Deployment Image Servicing and Management tool
Version: 6.1.7600.16385

Details for image : d:\OS Images\Windows 7 Ult 64-bit\sources\install.wim

Index : 1
Name : Windows 7 HOMEBASIC
Description : Windows 7 HOMEBASIC
Size : 11,500,789,302 bytes

Index : 2
Name : Windows 7 HOMEPREMIUM
Description : Windows 7 HOMEPREMIUM
Size : 12,012,660,212 bytes

Index : 3
Name : Windows 7 PROFESSIONAL
Description : Windows 7 PROFESSIONAL
Size : 11,910,752,928 bytes

Index : 4
Name : Windows 7 ULTIMATE
Description : Windows 7 ULTIMATE
Size : 12,070,211,908 bytes

The operation completed successfully.