Description of Windows Files Located in the Root Folder

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SUMMARY
This article describes some of the Windows files you may find in theroot folder of your hard disk.
MORE INFORMATION
Autoexec.bat - Windows configuration file
   This file contains commands that should be run by Windows before   the 32-bit portion of the operating system is started.				

   This file is necessary only if you need to load a real-mode driver.				

Autoexec.dos - Previous MS-DOS Autoexec.bat file
   This file contains the original Autoexec.bat file from the previous   operating system. It is used if you boot the previous operating   system.				

Bootlog.prv - Previous Windows startup log file
   This file records the progress of the previous Windows startup   process. When you request a logged boot (or if Windows performs one   automatically), the previous Bootlog.txt file is renamed to Bootlog.prv   before the new Bootlog.txt file is created.				

   This file is not necessary for the proper operation of Windows and   can be deleted.				

Bootlog.txt - Windows startup log file
   This file records the progress of the Windows startup (boot)   process. It is created if you request a logged boot, and is also   created automatically by Windows if Windows detected that the   previous boot was unsuccessful.				

   This file is not necessary for the proper operation of Windows and   can be deleted.				

Command.com - Windows command line processor
   This program is the Windows command line processor.				

   This file is necessary for the proper operation of Windows and   should not be deleted.				

Command.dos - Previous MS-DOS Command.com file
   This file contains the original Command.com file from the previous   operating system. It is used if you request to boot the previous   operating system.				

Config.dos - Previous MS-DOS Config.sys file
   This file contains the original Config.sys file from the previous   operating system. It is used if you boot the previous operating   system.				

Config.sys - Windows configuration file
   This file contains parameters that describe the real-mode (16-bit)   drivers that should be loaded into memory as part of the Windows   startup process.				

   This file is necessary only if you need to load a real-mode driver.				

Cvt.log - Drive Converter (FAT32) Log File
   This file is created by the Drive Converter (FAT32)   when you convert a drive to FAT32 and may be useful   for troubleshooting failed conversions.				

   To remove this file, delete it from Windows Explorer.				

Detlog.old - Previous Windows detection log file
   This file records the progress of the previous Windows hardware   detection process. When you request that new hardware be detected, the   previous Detlog.txt file is renamed to Detlog.old before the new   Detlog.txt file is created.				

   This file is not necessary for the proper operation of Windows and   can be deleted.				

Detlog.txt - Windows detection log file
   This file records the progress of the Windows hardware detection   process. It is created during hardware detection and is consulted by   the hardware detection recovery process if the previous attempt to   detect hardware caused problems.				

   This file is not necessary for the proper operation of Windows and   can be deleted.				

Io.dos - Previous MS-DOS Io.sys file
   This file contains the original Io.sys file from the previous operating   system. It is used if you boot the previous operating system.				

Io.sys - Windows MS-DOS
   This file contains Windows MS-DOS.				

   This file is necessary for the proper operation of Windows and   should not be deleted.				

Logo.sys - Windows logo
   This file contains the Windows logo that is displayed as part of the   startup process.				

   Note that Windows 98 does not use the Logo.sys file. If you are running   Windows 98, this file may not exist in the root folder.				

Msdos.dos - Previous MS-DOS Msdos.sys file
   This file contains the original Msdos.sys file from the previous   operating system. It is used if you boot the previous operating   system.				

Msdos.sys - Windows configuration file
   This file contains parameters necessary for the early phases of the   Windows startup process. For more information, please see the   following article in the Microsoft Knowledge Base:				

ARTICLE-ID: 118579
TITLE : Contents of the Windows Msdos.sys File

   This file is necessary for the proper operation of Windows and   should not be deleted.				

Oemlog.txt - Windows Original Equipment Manufacturer (OEM) log file
   This file records the progress of the Windows OEM preinstallation   process.				

   This file is not necessary for the proper operation of Windows and   can be deleted.				

Scandisk.log - ScanDisk log file
   This file is created by the ScanDisk program to record the result of   the most recent disk scan.				

   This file is not necessary for the proper operation of Windows and   can be deleted.				

Setuplog.txt - Windows Setup log file
   This file is created by Windows Setup to record the progress of the   installation procedure. It is consulted by Windows Setup as part of   installation recovery.				

   This file is not necessary for the proper operation of Windows and   can be deleted.				

Suhdlog.dat - Windows Setup hard disk log file
   This file contains a copy of all Master Boot Records and Partition Boot   Records on the system both before and after the upgrade to Windows.   This file is used by Windows Uninstall to restore the hard disk   master boot sector as part of the uninstall process.				

   To remove this file, click "Old Windows 3.x and MS-DOS system files" in   the Add/Remove Programs tool and then click Add/Remove.				

System.1st - Windows first registry
   This file contains a copy of the original registry created by Windows setup.				

   Although this file is not necessary for the proper operation of Windows   and can be deleted, it is recommended that the file be retained   because it can be used to restore the registry should it become   damaged.				

Videorom.bin - a copy of your onboard video card's ROM.


   This file is used by Windows 98 to support multiple   monitors. It is created during startup, when the system   has only one video adapter (if the file does not already   exist). If you delete this file, you lose support   for multiple monitors until you remove all but your   primary video adapter and restart Windows (so that   this file can be re-created).				

W95undo.dat - Windows 95 uninstall data file
   This file contains a compressed backup of Windows 3.x files that were   replaced as part of the Windows 95 installation process. It is created   by Windows 95 Setup and is used as part of the Windows 95 uninstall   process.				

   To remove this file, click "Old Windows 3.x and MS-DOS system files" in   the Add/Remove Programs tool and then click Add/Remove.				

W95undo.ini - Windows 95 uninstall script file
   This file contains a listing of files backed up in the W95undo.dat   file. It is created by Windows 95 Setup and is used as part of the   Windows 95 uninstall process.				

   To remove this file, click "Old Windows 3.x and MS-DOS system files" in   the Add/Remove Programs tool and then click Add/Remove.				
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Article ID: 151667 - Last Review: 12/04/2015 14:48:48 - Revision: 1.2

Microsoft Windows 98 Standard Edition, Microsoft Windows 95

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