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From: t02@clark.edu (Torry Schreiner)
Newsgroups: comp.sys.ibm.pc
Subject: Re: DOS 5.0 installation disaster
Message-ID: <1991Jun24.201847.3754@clark.edu>
Date: 24 Jun 91 20:18:47 GMT
Article-I.D.: clark.1991Jun24.201847.3754
References: <91174.181153CBTCC@CUNYVM.BITNET>
Organization: Clark College, Vancouver, Wa. USA
Lines: 49

In article <91174.181153CBTCC@CUNYVM.BITNET> CBTCC@CUNYVM.BITNET writes:
>I tried to post this earlier, and I don't think it made it.  Pardon if this is
>a repeat....
>My rommate just installed DOS5 on his Tandy 2500XL. The installation
>bombed.  He said he did everything as laid out in the manual, & I
>believe him.  Anyway, as I said, it's on a Tandy 2500 XL.  This is the  screen
>appearance on booting:
>*********************************************(My stars...)
>MS-DOS Version 3.30.10
>(C)Copyright Microsoft Corp 1981-1987
>All rights reserved
>
>Mouse Driver - Release 4.10 (sys)
>Copyright (C) 1984, 1989 Logitech Inc. All rights reserved.
>EGA/VGA connected
>Mouse Driver installed.
>
>HIMEM: DOS XMS Driver, Version 2.77 - 02/27/91
>XMS Specification Version 2.0
>Copyright 1988-1991 Microsoft Corp.
>
>Installed A20 handler number 1.
>64K High Memory Area is available.
>
>
>Unrecognized command in CONFIG.SYS
>Incorrect DOS version
>
>Bad or missing Command Interpreter
>********************************************(End of screen)
>It looks as though the installation didn't take at all.  We got the same
>message when we tried to boot off various floppies.  The machine didn't appear
>to access any drive except the fixed disk.
>I told Vin that I would post this, and that some guru in Netland would help
>him out.  Any advice?
>
>PS: He also tried booting with the UNINSTALL disk, and got the same message.
>
>Please send any replies to me- I can never keep up with all the traffic on all
>the newsgroups I read, and I'll probably miss any posted replies.  I'll
>summarize & post a condensed list of possible fixes as they come in...
>Thanks!
>
>Chris Thompson
>CBTCC@CUNYVM.CUNY.EDU    (BITNET)
>christ@sci.ccny.cuny.edu (INTERNET)

Sounds like you got screwed by Tandy.  Some Tandy machines have DOS on a chip.
In order to upgrade DOS versions you have to buy the new chip from Tandy.