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From: steed@techunix.BITNET.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: Fun with RAM disks (was Re: Improve response time with paths)
Message-ID: <2263@techunix.BITNET>
Date: Mon, 7-Dec-87 07:56:58 EST
Article-I.D.: techunix.2263
Posted: Mon Dec  7 07:56:58 1987
Date-Received: Sat, 12-Dec-87 09:24:35 EST
References: <15000048@silver> <1199@lznv.ATT.COM>
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: steed%techunix.bitnet@jade.berkeley.edu (Ze'ev (Steed) Shtadler)
Organization: Technion, Israel Inst. Tech., Haifa Israel
Lines: 39

In article <1199@lznv.ATT.COM> psc@lznv writes:
>I do something similar with my C compiler.  Most of the time, I boot
>off of the C: drive (hard disk), without a RAM disk.  When I want to
>hack, I put in my "C boot floppy" and boot off of it.  The CONFIG.SYS
>builds a RAM disk, specifies that C:COMMAND.COM is the command
>interpreter (so I can take the floppy out when I'm done), and does
>everything else my C:\CONFIG.SYS does.  The AUTOEXEC.BAT on the floppy
>take populates the RAM disk from an archive on the floppy, then goes to
>the C: drive and runs AUTOEXEC (the usual one on the hard disk).

I like this idea...

>The only limitation is that the boot floppy doesn't run A:AUTOEXEC on
>start-up.  I assume it's confused by not using A:COMMAND.COM.  I
>renamed A:AUTOEXEC.BAT to A:GO.BAT, so I just boot off of the floppy
>and type "GO".

The problem is much more simple: When you specify the SHELL command in
CONFIG.SYS you have to tell command.com to execute AUTOEXEC.BAT.  This
is done by using the /p switch.  The corrected CONFIG.SYS line should
look like:

SHELL=c:\command.com /p

Since you boot from A: drive C:\COMMAND.COM executes A:AUTOEXEC.BAT.

                                        Ze'ev.
--------
Ze'ev Shtadler.
Computer Science Faculty,
Technion, Israel Institute of Thechnology,
Haifa Israel
Phone (work):   (+972) 4-293849

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