Let me just add that I have had TR running from a thumb drive all morning
here in DEBUG mode -- over 900 QSOs per hour. In my case, I have DOS on
the thumb drive, because my computer -- a dirt-cheap Dell Dimension 2400 --
will boot from a USB flash device; the option is found by hitting F12 at
the beginning of boot-up.
The procedure for putting a DOS boot sector and system files on a thumb
drive, also developed and documented by KD4D, is in the February 2005 PVRC
Newsletter, to be found at <http://pvrc.org/Newsletters/feb05.pdf>.
73, Pete N4ZR
At 02:02 PM 1/31/2005, Tom Whiteside wrote:
Sunday I posted success in an actual contest using TRlog on an XP machine
using a boot diskette and a USB Flash (thumb) drive. I have done a
bunch of running TR using the debug simulator but nothing like a real
contest to fully engage Murphy.
Mark, KD4D suggested I write a bit more so folks can see just how simple
this process was. He also suggested posting this on the Contest
reflector - I'm not a subcriber so perhaps someone can forward if you
think this is helpful.
OVERVIEW: The concept is very simple - TR and XP are basically
incompatible and the NTFS file system that new XP computers are built on
are also incompatible with DOS. One solution is adding an appropriate
disk partition and using a dual boot arrangement as KD4D has thoroughly
documented. This is probably the best approach but my goal was to do
this on a stock computer without changing anything.
Here is all I have to do: Boot the computer under XP and plug in the
thumb drive which has TR and my contest stuff on it. Insert a DOS floppy
and do a restart boot with the right autoexec, etc and voila - I am
running TR on the Thumb drive. Some computers support booting from the
USB device but mine does not allow that. KD4D has documented an approach
for booting from a CD but my machine has a floppy and I just boot off of
that. What could be more simple?
Here are more details on what I did:
Setting up the thumb drive:
Simple - these already use a FAT file format for compatibility - just
created a TR directory and put my TR data in there. This drive is seen
as the "C" drive on boot. Mine is a 512MB drive - this process probably
won't work on one bigger than 2GB.
Setting up the floppy diskette:
I used a Win98 machine to format a diskette by right clicking the A:
drive and choosing to format the diskette with system files - you need
that to allow it to boot.
Next, I copied the following DOS commands from the Win98 system to the
diskette:
EDIT.COM
EMM386.EXE
HIMEM.SYS
MEM.EXE
MORE.COM
SMARTDRV.EXE
There may be other DOS commands you find you need and you can copy them
onto the floppy as needed. I located them using the Windows Explorer
file search facility.
The AUTOEXEC.BAT and CONFIG.SYS files needed are very vanilla. The
AUTOEXEC.BAT file is:
lh smartdrv.exe C+ 16384 2048
path=c:\tr;a:
c:
cd tr
tr
smartdrv.exe /c
A couple of comments - the USB thumb drives are painfully slow without
using SMARTDRV. Notice that I made the disk cache huge by DOS standards
but no sweat for a modern computer. The SMARTDRV.EXE /c last line is to
insure that any latent cache writebacks get handled when the autoexec
completes. You could use a RAM disk to minimize writes to the drive but
that seems like a good way to lose a contest to me....
Here is the CONFIG.SYS file:
DOS=HIGH,UMB
lastdrive=D
device=HIMEM.SYS
device=emm386.exe noems
Nothing exciting here.
I had to do absolutely nothing unusual in the TR cfg file - all works just
like normal. I'm keying a DX Doubler with a parallel port and have a Ten
Tec Orion on one of the native serial ports. My Dell XPS computer has
two serial ports and I can use the second one as a multiport or to feed
packet spots from another computer using DXTelnet. W5TA was doing a
single op this weekend so packet was not being used but my testing has
been with packet and TR simulator in debug mode.
What allows this to work in a modern computer is that the thumb drives are
recognized and managed at the BIOS level. I don't know why I have to run
XP to get the drive going rather than a cold boot to DOS but I do.
The bottom line is that this is EASY and it seems to work flawlessly
here. Give it a try! (Thanks to N4ZR for his NCJ blurb on doing this
and to ND4D for his coaching in forgotten DOS lore and other encouragement.)
Tom Whiteside N5TW
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