Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!pacbell!att-ih!ihnp4!inuxc!iuvax!pur-ee!pur-phy!mrstve!mdbs!joe
From: joe@mdbs.UUCP (Joe Greer)
Newsgroups: comp.sys.ibm.pc
Subject: Re: HELP? with upgrade => 3.3
Message-ID: <863@mdbs.UUCP>
Date: 10 Mar 88 18:48:24 GMT
References: <5855@vrdxhq.UUCP>
Reply-To: joe@mdbs.UUCP (Joe Greer)
Organization: Micro Database Systems, Inc., Lafayette IN
Lines: 40

In article <5855@vrdxhq.UUCP> tom@vrdxhq.UUCP (Tom Welsh) writes:
>I have a Compaq Deskpro, circa 1985.  One year ago I put in
>a NEC V30.  Since then I've run all kinds of software with
>NO PROBLEMS.  
This certainly duplicates my experiences.

>
>Well, guess what?  My machine won't boot from the hard disk.  I can
>boot from DOS 3.3 in drive A, and everything works fine.  The hard
>disk is all there -- and I reloaded all my software and tested everything
>with NO PROBLEMS.                               
>
>But, if I try to boot from the hard disk, it just hangs.  I never get
>anything.                    
>
>Actually, I had a couple of other peculiarities:
>
>  1)  WHen I tried to run PC 3.3 basica, I got a message
>      telling me to load Compaq MS-DOS diskette in drive A or B.
>      Bizarre!  That means the EPROM is intercepting BASICA 
>      invocations.
If you will recall your history lessons, IBM in its "wisdom" decided to put
about 80% of basic on rom.  Therefore, you can not run the stock basica 
provided with the DOS.  You must copy your old basic from the 2.11 version
to get a basic to run on the compaq (actually, this applies to all clones).

>
>  2)  Machine now boots in slow (4.77 red light mode) instead of
>      7.14.
There is nothing you can do about this.  Compaq's version of msdos 
automatically switches to high speed for you, but since IBM has only had
slow speed, Stock IBM DOS 3.x isn't going to switch it.


As to why your hard disk doesn't boot, I don't know.  Did you reformat
it, instead of just typeing 'sys c:'?  If you didn't, do it.  If you did
then try reinstalling ms2.11, then boot DOS 3.3 and do a sys c:.  (These
are guesses,  I know that I have successfully gotten past releases of IBM's
DOS to run of my harddisk on my Compaq, though I usually upgrade to the
equivalent Compaq DOS when possible, since bus timing is a little trickier
on the compaq and compaq's DOS handles it better that IBM's).