E não se esqueça de alterar o SID do computador após a clonagem:
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Definição:
In the context of the Microsoft Windows NT line of operating systems, a Security Identifier (commonly abbreviated SID) is a unique, immutable identifier of a user, user group, or other security principle. A security principle has a single SID for life, and all properties of the principle, including its name, are associated with the SID. This design allows a principal to be renamed (for example, from "John" to "Jane", without affecting the security attributes of objects that refer to the principal.
Problemas com o mesmo SID em dois ou mais PCs:
The problem with duplicated SIDs in a Workgroup of computers running Windows NT/2K/XP is only related to different user accounts having the same SID. This could lead to unexpected access to shared files or files stored on a removable storage: If some access control lists are set on a file, the actual permissions can be associated with a user SID. If this user SID is duplicated on another computer (because the computer SID is duplicated and because the user SIDs are built based on the computer SID + a sequential number), a user of a second computer having the same SID could have access to the files that the user of a first computer has protected.