I have lost access to the root of the boot partition, now I can't logon.

A. A. If you set the root of the boot partition to no access then you will be unable to logon. To get round this perform the following

  1. Logon to the NT machine as Administrator
  2. When you get the blue screen and "Path too Long" press the OK button
  3. Press Ctrl-Alt-Del and the Windows NT Security dialog box will be shown
  4. Press the Task Manager button and the task manager will be shown
  5. Select the Applications tab and click the "New Task" button
  6. Enter the path "%systemroot%\system32\cmd.exe"
  7. Enter the command
    CACLS d:\ /e /g everyone:F
    where d is the boot partition
  8. Select Task Manager again and click "New Task", and enter %systemroot%\explorer.exe, the desktop should now appear
  9. Logout and login again to confirm everything is OK
  10. You should now set the permissions on the root, see Q155315 at http://support.microsoft.com/support/kb/articles/q155/3/15.asp for more information

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