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1994-01-27
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DOCUMENT:Q103049 26-JAN-1994 [W_NT]
TITLE :How to Remove Windows NT Boot Sector
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
----------------------------------------------------------------------
This article details procedures that enable you to remove Windows NT
boot sector from your system. Before you begin, make sure you know
where Windows NT is installed, how much of it you want to remove, and
how your hard disk drive is partitioned and formatted. Then, go to one
of the following sections:
- Removing Windows NT from the Boot Sequence
- Removing a Primary NTFS Partition
Removing Windows NT from the Boot Sequence
------------------------------------------
There are two ways to remove the Windows NT boot sector from your
machine:
- If you want to return to your original MS-DOS configuration, boot
MS-DOS and type "sys c:" (without the quotation marks). This
command replaces the Windows NT boot sector with the MS-DOS boot
sector, and allows your machine to boot straight into MS-DOS. The
following files are left in the root directory and can be deleted
after you perform the SYS operation:
PAGEFILE.SYS
BOOT.INI
NTLDR
NTDETECT.COM
NTBOOTDD.SYS
NOTE: NTBOOTDD.SYS is installed only if you have a SCSI Host
Adapter installed in Windows NT.
- If you want to leave NTLDR on the disk, you can boot MS-DOS without
prompting by changing the startup operating system and time-out
value. To do so, choose the System icon in the Control Panel,
select MS-DOS in the Startup box, and type "0" (without the
quotation marks) in the Show List For box.
NOTE: If the primary partition was converted to NTFS, the only way
to return to starting MS-DOS only is to reformat the drive and
reinstall MS-DOS. See the next section if this is the case.
Removing a Primary NTFS Partition
---------------------------------
In general, attempts to modify the primary, bootable, NTFS partition
fail for the following reasons:
- MS-DOS versions 5.0 and 6.0 do not recognize an NTFS partition. The
MS-DOS Fdisk program reports an NTFS partition as an OS/2
high-performance file system (HPFS) partition.
- You cannot modify or delete an NTFS primary partition within
itself.
To delete or modify a primary NTFS partition, perform any one of the
following four procedures:
- Boot MS-DOS version 6.0 from a floppy disk and press RETURN to
continue installing MS-DOS 6. When prompted to do so, choose
"Remove files".
- Initiate Windows NT installation from floppy disks or CD-ROM.
When prompted to do so, choose "P" to remove the partition.
- Use the DELPART utility to delete the NTFS partition. DELPART is
provided in the Microsoft Windows NT Resource Kit. Note that
DELPART cannot delete a logical drive in the extended partition.
- Boot OS/2 version 1.x from a floppy disk and run its Fdisk program.
To remove the partition, specify the /D option.
Additional reference words: 3.10 uninstall
KBCategory:
KBSubCategory: WINNT STP
=============================================================================
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 1994.