Access registry from an external hard drive 

In this tutorial,I will explain how to Access registry from an external hard drive.

1.Open REGEDIT

2.Click HKEY_LOCAL_MACHINE

3.Click FILE in the Menu Tab and choose LOAD HIVE.

4.browse the old registry hive.

where 'x:\' is the drive of the external hard drive and 'user' is located in x:\docs and Settings\user\NTUSER.DAT

You can also check other registry hives located at x:\windows\system32\config