Greetings --
There is no way to reboot a WinXP PC into Real Mode DOS unless
you've set up a dual-boot system. The WinNT family of 32-bit
graphical operating systems, of which WinXP is the latest generation,
has never used or included MS-DOS. The closest they have is the
Command Prompt window.
WinXP, like its predecessors WinNT & Win2K, is a pure 32-bit GUI
OS, and does not include or "ride upon" any version of DOS, as did
Win3.x & Win9x/Me. WinXP does include a command-line emulator for
those times when GUI applets are unnecessary/redundant, but it cannot
be started in "DOS mode."
If WinXP is already installed:
http://www.dougknox.com/xp/tips/xp_repair_9x.htm
Otherwise:
The simplest way I've found to dual boot between Win9x and WinXP
would be to partition your drive(s) roughly as follows:
C: Primary FAT32 Win9x/Legacy Apps
D: Extended NTFS WinXP/Modern Apps
Adjust the partition sizes according to your actual hard drive(s)
size and the amount of space you'd like to allocate to each OS and its
applications.
Create the partitions using Win9x's FDISK so you can enable large
disk support (FAT32). (No need for 3rd party partitioning
utilities/boot managers and their frequent complications.)
Install Win9x first, being sure to select "C:\Windows" (or
D:\Windows, if you prefer) when asked for the default Windows
directory. When you subsequently install WinXP, be sure to specify
"D:\Winnt" (or "D:\Windows," "C:\Winnt" as referred/applicable) when
asked for the default Windows directory, to place it in the other
partition. The WinXP installation routine will automatically set up a
Multi-boot menu for you. The default settings for this menu can be
readily edited from within WinXP. NOTE: If you elect to place Win98
on the "D:" drive, you'll _have_ to leave the "C:" drive as FAT32.
This method can be adapted to using 2 physical hard drives by
placing the boot partition (C:, which still must be FAT32) and either
of the operating systems on the Primary Master hard drive, and the
second operating system on the second hard drive.
It is also possible to have a 3rd partition for shared
applications, but it would be necessary for such a partition to be
formatted in the common file format (FAT32). The applications would
also have to be installed into each OS (to ensure proper system file
placement and registry updates), one at a time, but the bulk of the
program files could be located on this common partition. I do not,
however, actually recommend doing this as, if you were to uninstall
such an application from one OS, you may not be able to gracefully
uninstall it from the second OS, having already deleted crucial
installation data during the first uninstall action.
Just about everything you need to know (URLs may wrap):
http://support.microsoft.com/support/kb/articles/Q217/2/10.ASP
http://www.microsoft.com/windowsxp/pro/using/howto/gettingstarted/multiboot.asp
Bruce Chambers
--
Help us help you:
You can have peace. Or you can have freedom. Don't ever count on
having both at once. -- RAH
