How to: Install Windows 95 to dual boot with MS-DOS.
Solution:
Install Windows 95, and set BootMulti=1 in Msdos.sys.
NOTE 1: You cannot dual boot to a previous version of DOS if you are running Windows 95 release OSR2.
NOTE 2: To also dual boot to a previous version of Windows, install Windows 95 in a DIFFERENT directory from the previous Windows version.
NOTE 3: 'Dual boot' means that the computer can boot either of two operating systems (although NOT simultaneously).
NOTE 4: DOS versions older than 5.0 DO NOT dual boot with Windows 95.
1) Run Windows 95 Setup.
2) Do one of the following:
a) Keep a previous version of Windows: Select a different directory from the one used by the previous Windows version.
b) Upgrade the previous version of Windows: Accept the Windows 95 Setup default directory.
3) Complete the Windows 95 installation.
4) Click the 'Start' button to display the 'Start' menu and select 'Programs'.
5) Select 'MS-DOS Prompt'. (A DOS command prompt window appears.)
6) Type the following commands at the MS-DOS prompt and press ENTER:
ATTRIB -S -H -R MSDOS.SYS
EDIT MSDOS.SYS
(Msdos.sys opens in the DOS editor.)
7) Find the '[Options]' section of Msdos.sys.
8) Add the following line after [Options]:
BootMulti=1
9) Save the changes to Msdos.sys.
10) Exit the editor.
11) Type the following commands at the MS-DOS prompt and press ENTER:
ATTRIB +S +H +R MSDOS.SYS
EXIT
(The MS-DOS window closes.)
12) Shut down and restart Windows 95.
13) (Optional) To boot the previous version of DOS:
a) Turn on the computer.
b) Wait for the 'Starting Windows 95' message to appear.
c) Press F8 IMMEDIATELY.
d) Select 'Previous DOS version' from the 'Shut Down Windows' pop-up menu.
