You can confirm which user profile was copied to the Default user profile by opening the file %systemroot%\panther\unattendgc\setupact.log and searching for lines similar to the following (in the 'specialize' pass):
[shell unattend] CopyProfileDirectory from c:\Users\Administrator succeeded.
[shell unattend] CopyProfile succeeded.
In this example, the built-in local Administrator account was copied to the default user profile.
See the following Knowledge Base article for more information about customizing the Default User Profile:
973289 How to customize default user profiles in Windows 7 and in Windows Server 2008 R2
Artikel-id: 2101557 - Laatst bijgewerkt: 28 mei 2010 - Revisie: 1