Windows3.1、Windows95無印からOSR2にアップグレードインストールする方法

Win95: Upgrade OSR1 to OSR2 ?
http://www.sysopt.com/showthread.php?16225-Win95-Upgrade-OSR1-to-OSR2

You can do it several ways. I think this is the easiest. You just have to tell setup that it is an upgrade version. If you have updated dial up networking you will have to re-do it. & if you have Ms Internet explorer 4.x I would uninstall it first.

NEW METHOD: Here's a new, simple method of upgrading an older version of Windows (3.x or 95) to OSR2, submitted by Jay Decker:

Probably the easiest method to upgrade from Win95 to OSR2 is to

1) Copy the Win95 source files from the Win95 directory on the OSR2 CD
to a hard drive
2) Create and save an MSBATCH.INF file in the same directory where you
copied the Win95 files to. The file must contain the following lines:
[Setup]
ProductType=1

Follow the last line by a carriage return otherwise you'll get a
Data Control Corrupt error.

The file MUST be called MSBATCH.INF and MUST exist in the same directory
as the Win95 source files. You will still be able to specify another
customized batch file on the SETUP command line or you can add any other
custom information to this MSBATCH.INF.