Re: Bootable & Writable USB Pen Drive with MSDOS?
- From: "J. Clarke" <jclarke.usenet@xxxxxxxxxxxxxxxx>
- Date: Thu, 29 Sep 2005 15:13:55 -0400
spidey wrote:
>> I am confused. Your Subject line mentioned MSDOS, but you mentioned
>> Windows XP here. So what OS is actually on your pen drive?
>
> Well, I guess I want only the command prompt, not the whole windows XP,
> otherwise the program I'm using to dump the firmware won't have access
> to the firmware. As far as I know XP doesn't have a command prompt
> booting mode, and it actually uses MSDOS to do it. But I may be wrong.
>
> So what I want is a bootable & writable USB Pen Drive with command
> prompt only, and it may be MSDOS or XP, if possible. But not linux. And
> it has to be able to write as if it were a regular floppy disk.
You're dealing with a number of different issues.
The first is that you say you want to dump the firmware for your video
processor. Presumably you have a utility to do that and that utility
specifies that you use a specific operating system. If so, that is the
operating system that you need to be using and if it has limitations then
you need to put up with those limitations.
Booting to an XP command prompt won't bypass the hardware abstraction
layer--XP does _not_ run on top of MS-DOS--the only MS-DOS that is there is
a partial emulation that is accessible from a command window. So doing this
will _not_ allow you to run an MS-DOS dump utility that will not run in a
command window. There is a limited command line mode that you can access
by booting from the CD but it isn't going to give you the capability that
you seem to be looking for.
If your dump application says "MS-DOS" then you need to be running MS-DOS or
PC-DOS or possibly DR-DOS or one of the other DOS clones, _not_ the XP
command line.
Now, if you go to install MS-DOS on a pen drive, it may or may not work
depending on how your BIOS presents a pen drive to the OS--if it is
presented as a standard hard disk then you should have no trouble--if it
does not and you need a device driver to support it then you're likely
screwed.
I note that there is a freeware product called "NTFS4DOS" that has no
documentation, release notes, or anything else that I can find. It may
work or may not--given that the Linux folks, who have a hellacious lot of
expertise in operating systems, are pretty much giving up on write-access
to NTFS I wouldn't trust any non-Microsoft product that purports to write
to it to not corrupt the file system.
I do not understand why you need this capability in any case. If your
purpose is to download the firmware off your video board, surely the amount
of storage on your pen drive is sufficient to that task. Just download the
firmware and then if you need to access it from XP for some reason reboot
to XP and read it off the pen drive.
--
--John
to email, dial "usenet" and validate
(was jclarke at eye bee em dot net)
.
- References:
- Bootable & Writable USB Pen Drive with MSDOS?
- From: spidey
- Re: Bootable & Writable USB Pen Drive with MSDOS?
- From: Harry
- Re: Bootable & Writable USB Pen Drive with MSDOS?
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