Bret -- I booted up my CD and ran your DRIVES program. Here's the output in
a small monospaced font, I hope you can read it:
DRIVES 0.01, (C) 2007-2009, Bret E. Johnson.
Shows details about all available disk drives in DOS.
ATTRIBS
ÍÍÍÍÍÍÍÍÍ A
D N N S C PHYSICAL ATTRIBUTES
r e e P J U DRIVE C ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ
i t t h O B DEVICE DRVR PARAMETER E NUM BYTES
v H w y I S ÍÍÍÍÍÍÍÍÍÍÍÍÍ BLOCK S FAT ROOT PER NUM APPROX
e d k s N T ADDRESS UNT ADDRESS d TYPE ENTRY SECT SECTORS CAPACITY
Í ÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍ ÍÍÍ ÍÍÍÍÍÍÍÍÍ Í ÍÍÍÍÍ ÍÍÍÍÍ ÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍ
A . . Y . . 0070:060E 0 00D9:19FA Y FAT12 224 512 00000B21h 1458 kB
B . . Y . . 0070:060E 1 00D9:1A37 . ????? 0 0 Unknown Unknown
C . . Y . . 0070:060E 2 00D9:1A74 Y FAT32 0 512 090A8A62h 75 GB
D . . Y . . 0070:060E 3 00D9:1AB1 . ????? 0 0 Unknown Unknown
E . . Y . . 08E5:0000 0 0A3F:0000 Y FAT32 0 512 00EFFFE0h 8051 MB
F . . . . . ......... ... 0000:0000 . ..... ..... ..... ......... ........
G . . . . . ......... ... 0000:0000 . ..... ..... ..... ......... ........
etc...
X . . . . . ......... ... 0000:0000 . ..... ..... ..... ......... ........
Y Y Y Y . . ......... ... 0000:0000 . ..... ..... ..... ......... ........
Z . . Y . . 1A88:0000 0 1A88:012C Y FAT16 512 512 00019004h 52430 kB
Something is definitely wrong with nonexistent drive D:, and I suspected
the source to be one or both of the USB device drivers usbaspi.sys or
di1000dd.sys. These drivers were the ones recommended by the DFSee live CD
that I've been hacking for this project.
Just for kicks, I disabled BOTH of the drivers. Not only did that take care
of the original problem, but FreeDOS still found the thumbdrive -- this
time at drive D:
DRIVES 0.01, (C) 2007-2009, Bret E. Johnson.
Shows details about all available disk drives in DOS.
ATTRIBS
ÍÍÍÍÍÍÍÍÍ A
D N N S C PHYSICAL ATTRIBUTES
r e e P J U DRIVE C ÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ
i t t h O B DEVICE DRVR PARAMETER E NUM BYTES
v H w y I S ÍÍÍÍÍÍÍÍÍÍÍÍÍ BLOCK S FAT ROOT PER NUM APPROX
e d k s N T ADDRESS UNT ADDRESS d TYPE ENTRY SECT SECTORS CAPACITY
Í ÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍ ÍÍÍ ÍÍÍÍÍÍÍÍÍ Í ÍÍÍÍÍ ÍÍÍÍÍ ÍÍÍÍÍ ÍÍÍÍÍÍÍÍÍ ÍÍÍÍÍÍÍÍ
A . . Y . . 0070:060E 0 00D9:19FA Y FAT12 224 512 00000B21h 1458 kB
B . . Y . . 0070:060E 1 00D9:1A37 . ????? 0 0 Unknown Unknown
C . . Y . . 0070:060E 2 00D9:1A74 Y FAT32 0 512 090A8A62h 75 GB
D . . Y . . 0070:060E 3 00D9:1AB1 Y FAT32 0 512 00EFFFE0h 8051 MB
E . . . . . ......... ... 0000:0000 . ..... ..... ..... ......... ........
F . . . . . ......... ... 0000:0000 . ..... ..... ..... ......... ........
etc...
X . . . . . ......... ... 0000:0000 . ..... ..... ..... ......... ........
Y Y Y Y . . ......... ... 0000:0000 . ..... ..... ..... ......... ........
Z . . Y . . 163A:0000 0 163A:012C Y FAT16 512 512 00019004h 52430 kB
As an added benefit I'm also getting better mouse behavior. :^/
As the author of this program you apparently have some expertise regarding
USB drives and FreeDOS. If you could advise me as to whether loading either
of these drivers (or some other driver) would provide the most stable
configuration it would be appreciated on this end. For now, I'm leaving
both of them disabled.
Thanks for your help!
Bruce
On Tue, Nov 27, 2012 at 10:56 PM, bruce.bowman tds.net <bruce.bow...@tds.net>
wrote:
>
> I'll give it a try later, thanks.
>
> It's important to understand that once I boot into FreeDOS there is no
physical disk partition corresponding to drive D:. My FAT32 partition
(which is drive D: under XP) gets mapped to drive C: in FreeDOS. However, I
do have a drive E:, which is the USB thumbdrive. Could it be that the
FreeDOS kernel sees a drive E: and therefore expects a drive D: to exist
too? Beats me...
>
> What I mainly need things to do in this situation is to fail gracefully.
Thanks again for the utility and I'll let you know what happens.
>
> Bruce
>
>
> On Tue, Nov 27, 2012 at 8:35 PM, Bret Johnson <bretj...@juno.com> wrote:
>>
>> You can look at the output of my DRIVES program for the D: drive when
using FreeDOS. It will probably indicate that something is wrong in one or
more of DOS's internal tables. DRIVES is not intended to be used in batch
files, but simply displays some information about all of the drive letters
from DOS's perspective. It's usually a pretty good troubleshooting tool
for situations like this.
>>
>> DRIVES is one of the programs included in my USB driver package
available here:
>>
>> http://bretjohnson.us
>>
>>
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>
>
>
>
> --
> Sent from my meager, humble desktop computer.
>
--
Sent from my meager, humble desktop computer.
------------------------------------------------------------------------------
Keep yourself connected to Go Parallel:
INSIGHTS What's next for parallel hardware, programming and related areas?
Interviews and blogs by thought leaders keep you ahead of the curve.
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