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DOCUMENT:Q109076 30-DEC-1993 [W_NT]
TITLE :Removing Permissions to an NTFS Partition May Prevent Startup
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:
--------------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system version 3.1
- Microsoft Windows NT Advanced Server version 3.1
--------------------------------------------------------------------------
SYMPTOMS
========
If Windows NT is located on an NTFS partition and all permissions to the
root directory and the subdirectories on that partition for all groups and
users are removed, Windows NT will not be able to reboot properly.
CAUSE
=====
The Everyone group includes all users, including the Adminstrators. In
NTFS, because denials are applied before the grants of permissions, if you
deny permissions to the Everyone group and it happens to be the only set of
permissions, then in essence, no one, not even the System or Administrator,
has access to the file.
RESOLUTION
==========
To work around this problem, do the following:
1. Start the computer from the Windows NT Setup disk 1.
2. Select Repair.
3. Use the Emergency Repair Disk to select the Unsecure System Files option
to be able to start Windows NT.
This resets the permissions so that the system can access the files to
start.
After you start Windows NT, take ownership of all files and reset the
permissions so you can access the files.
MORE INFORMATION
================
Steps to Reproduce Problem
--------------------------
1. In File Manager, choose the root directory, and then select Security,
Permissions.
2. By default, the Everyone group has full control to the entire hard
drive. Usually, Everyone will be the only entry in the box. Remove
Everyone from the list.
3. Choose OK. A warning message appears saying that nobody will be able to
access the files. The warning does not tell you that you will not be
able to start Windows NT.
Now you won't be able to see any files on the hard drive.
4. Log off and log on again. Windows NT accepts the password, no errors
appear, but there will be no Program Manager Shell. Windows NT tries to
run the Program Manager shell, but because there are no permissions to
run the .EXE file, it does not run.
5. You can log on as anyone, but only a blank screen appears.
If you try to restart Windows NT, the following error message appears:
STOP: C000021A {Fatal System Error}
The session manager initialization system process terminated
unexpectedly with a status of 0x0000022. The system has been shutdown.
Additional reference words: 3.10
KBCategory:
KBSubcategory: scrty
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1993.