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- DOCUMENT:Q103280 13-DEC-1993 [W_NT]
- TITLE :Using an Emergency Repair Disk Created by Windows NT
- 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
- ----------------------------------------------------------------------
-
- SUMMARY
- =======
-
- Page 348 of the "Microsoft Windows NT System Guide" states "To repair
- the boot files on a WINNT.EXE installation, you may have to rerun the
- Repair program using the Setup disk set or CD-ROM used to create the
- original network share." This is generally not true. With both Windows
- NT and Advanced Server, it is possible to use an Emergency Repair Disk
- created by the WINNT.EXE installation to verify startup (boot) files
- and re-create them.
-
- MORE INFORMATION
- ================
-
- Something happens to your computer hard drive to corrupt or change
- your startup system files.
-
- For Example: You have a Windows NT system that allows you to specify
- which operating system to start (MS-DOS or Windows NT) by using the
- boot loader menu. If the MS-DOS SYS command is inadvertently run on
- drive C, you will no longer be able to start (boot) Windows NT. You
- will only be able to start MS-DOS.
-
- The boot loader is a small program that resides in the first physical
- sector[s] of the active partition. Windows NT stores the old boot
- loader code into a new file called BOOTSECT.DOS. Windows NT replaces
- the boot loader sector with a new loader program stub. This new loader
- finds the program NTLDR and executes it. NTLDR switches into protected
- mode operation and loads a mini-file system, which then reads
- BOOT.INI. BOOT.INI presents the boot loader information used to start
- your system with Windows NT or MS-DOS. In the above example, when the
- SYS command was run from MS-DOS, the boot loader sector was
- overwritten by MS-DOS's boot sector. This MS-DOS boot sector does not
- know anything about Windows NT or boot loader.
-
- NOTE: The Emergency Repair Disk created by a Windows NT installation
- can ONLY be used with the Verify Boot Files On Your C: Drive and
- Inspect Registry Files options. You CANNOT use the Verify Windows NT
- System Files option with an Emergency Repair Disk Created by a Windows
- NT installation because the installation was done from the network or
- an unsupported CD-ROM.
-
- REPAIR PROCEDURE
- ================
-
- The procedure below explains how to re-create the Windows NT boot
- sector information, allowing the dual boot features to be re-activated
- using the Emergency Repair Disk created during installation:
-
- 1. Start your system using Disk 1 - Setup Disk for Floppy Disk
- Installation, or the CD-ROM Installation Disk 1 if Windows NT was
- installed from CD-ROM.
-
- 2. At the first blue screen, press R for Repair.
-
- 3. When prompted to do so, insert the Emergency Repair Disk that was
- originally created for this computer.
-
- 4. Reinsert Disk 1 when prompted. (This is the same disk with which
- you started your system).
-
- 5. You will see three selections. All three will be selected by
- default. Move the selector bar with the arrow keys to highlight the
- options. Use the SPACEBAR to select/clear the options.
-
- 6. Select the option Verify boot files on your C: drive. Move the
- selector bar to the line that says to Continue and press the ENTER key.
-
- 7. The software will run CHKDSK and verify startup files and rebuild if
- necessary.
-
- 8. You will be prompted to restart your machine when the procedure is
- complete.
-
- When you restart your system, the Windows NT Flex Boot Loader screen
- appears, allowing you to choose between MS-DOS or Windows NT.
-
- ADDITIONAL SOURCES OF INFORMATION
- =================================
-
- - For more information about using the Emergency Repair Disk, see
- Chapter 12, "System Maintenance with Windows NT Setup" in the
- "Microsoft Windows NT System Guide." See the section on "Using
- the Emergency Repair Disk."
-
- - For more information about creating an Emergency Repair Disk, see
- Chapter 19, "Installing Windows NT" in the "Microsoft Windows NT
- System Guide."
-
- KBCategory:
- KBSubCategory: stp
-
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- Copyright Microsoft Corporation 1993.