Windows 8 Also has the ability to mount a Virtual Hard Disk to work with it. The following steps explain the process to perform this action.
Step 1: connect your external media
Step 2: Go to your desktop
Step 3: due to the lack of the windows start menu we are going to do this the "easy" way. press the left windows key and r to open the run command.
Step 4: this will open the run box. type in diskmgmt.msc and click ok
Step 5: This will open the disk management window. click action and attach VHD.
Steps 6-On: At this point the process is identical to windows 7. At this time i will be linking you to my blog on how to mount a windows 7 disk image. please start at step 4: http://fubar.com/mounting-the-image-to-work-with-it-in-windows-7/b355176-1203107