There is a command available in Windows for doing the task. "subst".
The command will create a virtual folder of all GAC files to a separate drive. Below is the syntax:
subst Z: C:\windows\AssemblyWhen you go to the my computer you will find a new drive under the regular drives. Just go inside and you can see all the GAC files. The folder GAC_MSIL is what your all files reside in. Copy the dll's you needed and paste them in some safe location for backup.
To remove the Z drive from machine, then use below command.
subst Z: /DAll credits goes to Phani and take a look at this post from him for more information. Enjoy some nice tips and rare findings from the blog.