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From: colin@la.excelan.com (Colin Goldstein)
Newsgroups: comp.os.os2.apps
Subject: Re: Windows under OS/2 - still troubled
Message-ID: <1991Apr2.022428.9380@novell.com>
Date: 5 Apr 91 21:24:30 GMT
Sender: news@novell.com (
Lines: 18

The News Manager)
Nntp-Posting-Host: la
Reply-To: colin@la.novell.com (Colin Goldstein)
Organization: Novell, Inc., San Jose, Ca
References: <91088.114611TURGUT@TREARN.BITNET>
Date: Tue, 2 Apr 1991 02:24:28 GMT

>Hello all. Windows 30 under IBM OS/2 1.2 EE still doesn't work for me.
>I have a 286 machine, and 4MB of memory. I switch to DOS mode,
>type WIN , and I get a "Warning: Program has changed an interrupt vector
>owned by the system". I suspect Windows does that for my PC-Mouse
>control? In any case, when I tell OS/2 to 'Ignore' the problem, I get
>into the Windows, but mouse doesn't work.
>
>This is really annoying me. I would appreciate any help. Thanks!
>-turgut

I bet you have Windows setup to use INT 2 as the mouse interrupt.
If this is the case OS/2 will not let a DOS program change it. Try
using some other INT.