Unzip archive to any folder and
Run create8.bat. This
batch file extract msdos 8 core: io.sys and command.com from bootdisk image from diskcopy.dll
in you Windows XP, Vista or 7. A bootdisk image was found in diskcopy.dll is a
modified version of the Windows ME Bootdisk. Restore io.sys(by replacing First 2048
bytes from original unmodified Windows Me OEM CD IO.SYS) and command.com
the "Real-mode functionality" in same folder. Create new boot floppy image
CORE8.IMA with Patched IO.SYS and COMMAND.COM.
Decompressed & Reduced IO.SYS version 8.0 Size 130 832
Original compressed IO.SYS version 8.0 Size 116 736
Note: Decompress not work with 64-bit versions of Windows
IO.SYS LBA lesser fix ("phantom drive letter enumeration" bug) by Joe da Silva has been applyed for MS-DOS 8.0
The following text strings has bin
replaced in all files:
"Microsoft(R) Windows Millennium" -->> "Microsoft(R) MS-DOS version 8.0"
"4.90.3000" -->> " 8.00 "
"Windows" -->> "MS-DOS "
"Millennium" -->> " "
You can add Microsoft disk
configuration tools include the format and fdisk commands to floppy image...
Oformat.com: This is a command-line tool to create a volume that uses the FAT32 file system. The tool creates a FAT32 volume with clusters that are aligned in an optimal way for later conversion to the NTFS file system. The Windows XP Corporate Deployment tools are available in the Deploy.cab file on the Windows XP CD-ROM and Windows XP service pack CD-ROMs in the Support\Tools folder. Description of the Windows XP Corporate Deployment tools and documentation -
Run GetFORMAT.bat, GetFDISK.bat.
Unofficial MS-DOS 8.0 Startup Disk creator - creates a MS-DOS Boot Disk with additional tools.
OEM string in bootsector, format.com & fdisk.exe replaced by "MSDOS8.0"
MS-DOS version check has been removed from format.com & command.com.
After boot type ver from the Command Prompt
MS-DOS version 8.0
Ver command display true version of MS-DOS 8.00, not an Windows version.
Interrupt 30H (Get DOS version)
return version numbers as follows:
7.0 Win 95
7.1 Win 95SE, 98
8.0 Win ME, XP
This "adaptation is created as an essential step in the utilization of the computer program in conjunction with a machine and that it is used in no other manner" (17 USC Sec. 117 ), because modern computers are not equipped with floppy drives, you can boot MS-DOS 8.00 direct from HDD. If your computer can boot a usb flash drive, you can download a MS-DOS boot diskette image creator and extract it to a usb flash drive.
Direct patch diskcopy.dll : diskcopypatch.bat - based on old Real DOS-Mode Patch for Windows Millennium v1.3 By Reines [MFD] , 2000
Used Freware Tools:
cabextract 1.2 (C)
2000-2006 Stuart Caie a program that un-archives files in the Microsoft
cabinet file format (.cab) or any binary file which contains an embedded cabinet
jacevedo3 Posted Jan 1 2008 : "XPBTDSK.EXE ... a console application to extract the image from diskcopy.dll" http://jacevedo.phstech.info/getbtdsk.zip
Tormod Tjaberg gsar.exe - General Search And Replace - http://tjaberg.com/
Gilles Vollant Extract ftp://ftp.winimage.com/extrac21.zip
Rudolph R. Loew IO8DCOMP.: Decompressor for IO.SYS Version 8 http://rloew.limewebs.com/Programs/IO8DCOMP.ZIP
Dariusz Stanislawek DS File Ops Kit http://members.ozemail.com.au/~nulifetv/freezip/freeware/dsfok.zip
Joe da Silva IO.SYS LBA fix for MS-DOS7.1 http://jds.atbhost.net/utilities/lba98fix.zip
Maлl Hцrz HxD hex editor http://mh-nexus.de/downloads/HxDen.zip
Henrik Haftmann FilePatch 1.14
More about: MS-DOS 8.00 ...
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