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Groups > comp.os.linux.misc > #11807 > unrolled thread

Need to make a DOS 6.22 boot usb

Started byTodd <Todd@invalid.invalid>
First post2014-08-22 18:11 -0700
Last post2014-08-26 11:44 -0700
Articles 20 on this page of 22 — 13 participants

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Contents

  Need to make a DOS 6.22 boot usb Todd <Todd@invalid.invalid> - 2014-08-22 18:11 -0700
    Re: Need to make a DOS 6.22 boot usb Balwinder S Dheeman <bdheeman.SANSPAM@outlook.com> - 2014-08-23 09:16 +0530
      Re: Need to make a DOS 6.22 boot usb Todd <Todd@invalid.invalid> - 2014-08-22 21:13 -0700
        Re: Need to make a DOS 6.22 boot usb "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2014-08-23 00:49 -0400
          Re: Need to make a DOS 6.22 boot usb "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2014-08-23 00:57 -0400
        Re: Need to make a DOS 6.22 boot usb Michael Black <et472@ncf.ca> - 2014-08-23 12:16 -0400
          Re: Need to make a DOS 6.22 boot usb Robert Heller <heller@deepsoft.com> - 2014-08-23 12:28 -0500
            Re: Need to make a DOS 6.22 boot usb Grant <omg@grrr.id.au> - 2014-08-24 09:50 +1000
        Re: Need to make a DOS 6.22 boot usb Jerry Peters <jerry@example.invalid> - 2014-08-24 20:14 +0000
    Re: Need to make a DOS 6.22 boot usb Rich <rich@example.invalid> - 2014-08-23 04:24 +0000
      Re: Need to make a DOS 6.22 boot usb Todd <Todd@invalid.invalid> - 2014-08-22 21:35 -0700
        Re: Need to make a DOS 6.22 boot usb gazelle@shell.xmission.com (Kenny McCormack) - 2014-08-23 10:28 +0000
          Re: Need to make a DOS 6.22 boot usb faeychild <faeychild@noreply.afraid.com> - 2014-08-24 10:43 +1000
            Re: Need to make a DOS 6.22 boot usb "Chris F.A. Johnson" <cfajohnson@gmail.com> - 2014-08-24 19:35 -0400
              Re: Need to make a DOS 6.22 boot usb gazelle@shell.xmission.com (Kenny McCormack) - 2014-08-24 23:46 +0000
        Re: Need to make a DOS 6.22 boot usb Rich <rich@example.invalid> - 2014-08-23 13:26 +0000
          Re: Need to make a DOS 6.22 boot usb The Natural Philosopher <tnp@invalid.invalid> - 2014-08-23 15:11 +0100
            Re: Need to make a DOS 6.22 boot usb Todd <Todd@invalid.invalid> - 2014-08-24 19:43 -0700
          Re: Need to make a DOS 6.22 boot usb Todd <Todd@invalid.invalid> - 2014-08-24 19:46 -0700
    Re: Need to make a DOS 6.22 boot usb Huibert Bol <huibert.bol@quicknet.nl> - 2014-08-23 08:31 +0200
      Re: Need to make a DOS 6.22 boot usb Todd <Todd@invalid.invalid> - 2014-08-24 19:51 -0700
    Re: Need to make a DOS 6.22 boot usb Todd <Todd@invalid.invalid> - 2014-08-26 11:44 -0700

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#11807 — Need to make a DOS 6.22 boot usb

FromTodd <Todd@invalid.invalid>
Date2014-08-22 18:11 -0700
SubjectNeed to make a DOS 6.22 boot usb
Message-ID<lt8pkr$ke0$1@dont-email.me>
Hi All,

I need to make a bootable USB drive with DOS 6.22 on
it to do a bunch of BIOS flash updates.

I have an image of an old DOS 6.22 floppy drive,
but can't figure out how make it bootable on
a USB drive.

And, Free DOS crashes the flash update utility.

Many thanks,
-T

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#11808

FromBalwinder S Dheeman <bdheeman.SANSPAM@outlook.com>
Date2014-08-23 09:16 +0530
Message-ID<lt92qe$f8f$1@speranza.aioe.org>
In reply to#11807
On 08/23/2014 06:41 AM, Todd wrote:
> Hi All,
> 
> I need to make a bootable USB drive with DOS 6.22 on
> it to do a bunch of BIOS flash updates.
> 
> I have an image of an old DOS 6.22 floppy drive,
> but can't figure out how make it bootable on
> a USB drive.

Try dd if=<path_to/>msdos_6.22.img of=/dev/sdX

where X is for the USB drive; make sure the MS-DOS image bootable.

> And, Free DOS crashes the flash update utility.

-- 
Balwinder S "bdheeman" Dheeman        Registered Linux User: #229709
Anu'z Linux@HOME (Unix Shoppe)        Machines: #168573, 170593, 259192
Chandigarh, UT, 160062, India         Plan9, T2, Arch/Debian/FreeBSD/XP
Home: http://werc.homelinux.net/      Visit: http://counter.li.org/

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#11810

FromTodd <Todd@invalid.invalid>
Date2014-08-22 21:13 -0700
Message-ID<lt9498$ebc$1@dont-email.me>
In reply to#11808
On 08/22/2014 08:46 PM, Balwinder S Dheeman wrote:
> On 08/23/2014 06:41 AM, Todd wrote:
>> Hi All,
>>
>> I need to make a bootable USB drive with DOS 6.22 on
>> it to do a bunch of BIOS flash updates.
>>
>> I have an image of an old DOS 6.22 floppy drive,
>> but can't figure out how make it bootable on
>> a USB drive.
>
> Try dd if=<path_to/>msdos_6.22.img of=/dev/sdX
>
> where X is for the USB drive; make sure the MS-DOS image bootable.
>
>> And, Free DOS crashes the flash update utility.
>


Tried that.  Didn't work.

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#11813

From"David W. Hodgins" <dwhodgins@nomail.afraid.org>
Date2014-08-23 00:49 -0400
Message-ID<op.xk03nyp1a3w0dxdave@hodgins.homeip.net>
In reply to#11810
On Sat, 23 Aug 2014 00:13:02 -0400, Todd <Todd@invalid.invalid> wrote:

> On 08/22/2014 08:46 PM, Balwinder S Dheeman wrote:
>> On 08/23/2014 06:41 AM, Todd wrote:
>>> I need to make a bootable USB drive with DOS 6.22 on
>>> it to do a bunch of BIOS flash updates.
>>> I have an image of an old DOS 6.22 floppy drive,
>>> but can't figure out how make it bootable on
>>> a USB drive.
>>
>> Try dd if=<path_to/>msdos_6.22.img of=/dev/sdX
>> where X is for the USB drive; make sure the MS-DOS image bootable.

> Tried that.  Didn't work.

A floppy disk doesn't have a mbr that's going to be bootable from
a usb stick. I'd try creating a fat16 primary partition on the
stick, with the bootable flag, and then copy the img to the partition,
instead of the device. I don't know if that will work, but I think
it should.

Regards, Dave Hodgins

-- 
Change nomail.afraid.org to ody.ca to reply by email.
(nomail.afraid.org has been set up specifically for
use in usenet. Feel free to use it yourself.)

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#11814

From"David W. Hodgins" <dwhodgins@nomail.afraid.org>
Date2014-08-23 00:57 -0400
Message-ID<op.xk031zzza3w0dxdave@hodgins.homeip.net>
In reply to#11813
On Sat, 23 Aug 2014 00:49:00 -0400, David W. Hodgins <dwhodgins@nomail.afraid.org> wrote:

> On Sat, 23 Aug 2014 00:13:02 -0400, Todd <Todd@invalid.invalid> wrote:
>
>> On 08/22/2014 08:46 PM, Balwinder S Dheeman wrote:
>>> On 08/23/2014 06:41 AM, Todd wrote:
>>>> I need to make a bootable USB drive with DOS 6.22 on
>>>> it to do a bunch of BIOS flash updates.
>>>> I have an image of an old DOS 6.22 floppy drive,
>>>> but can't figure out how make it bootable on
>>>> a USB drive.
>>>
>>> Try dd if=<path_to/>msdos_6.22.img of=/dev/sdX
>>> where X is for the USB drive; make sure the MS-DOS image bootable.
>
>> Tried that.  Didn't work.
>
> A floppy disk doesn't have a mbr that's going to be bootable from
> a usb stick. I'd try creating a fat16 primary partition on the
> stick, with the bootable flag, and then copy the img to the partition,
> instead of the device. I don't know if that will work, but I think
> it should.

Forgot to add. For the mbr boot code, see
http://www.filetransit.com/view.php?id=88316

Regards, Dave Hodgins

-- 
Change nomail.afraid.org to ody.ca to reply by email.
(nomail.afraid.org has been set up specifically for
use in usenet. Feel free to use it yourself.)

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#11819

FromMichael Black <et472@ncf.ca>
Date2014-08-23 12:16 -0400
Message-ID<alpine.LNX.2.02.1408231214100.20302@darkstar.example.org>
In reply to#11810
On Fri, 22 Aug 2014, Todd wrote:

> On 08/22/2014 08:46 PM, Balwinder S Dheeman wrote:
>> On 08/23/2014 06:41 AM, Todd wrote:
>>> Hi All,
>>> 
>>> I need to make a bootable USB drive with DOS 6.22 on
>>> it to do a bunch of BIOS flash updates.
>>> 
>>> I have an image of an old DOS 6.22 floppy drive,
>>> but can't figure out how make it bootable on
>>> a USB drive.
>> 
>> Try dd if=<path_to/>msdos_6.22.img of=/dev/sdX
>> 
>> where X is for the USB drive; make sure the MS-DOS image bootable.
>> 
>>> And, Free DOS crashes the flash update utility.
>> 
>
>
> Tried that.  Didn't work.
>
How did you make the "image"?

If you just copied that floppy, stuff is probably missing so it won't 
boot.  You need an actual image of the boot disk, which includes some 
hidden files, but also some code at the right place on the floppy that is 
read and executed to pull in the rest.

That's how Linux floppies were made bootable, the boot code at on the 
floppy.  Even booting from a CDROM, the same arrangement is done, so one 
can put a bootable floppy disk image onto a CDROM in the proper fashion 
and boot from the CDROM.

I seem to recall a USB flash drive may be more complicated, certainly I've 
fiddled around with doing that sort of thing and it didn't always work.

   Michael

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#11820

FromRobert Heller <heller@deepsoft.com>
Date2014-08-23 12:28 -0500
Message-ID<4t2dnXibToerUmXOnZ2dnUU7-bednZ2d@giganews.com>
In reply to#11819
At Sat, 23 Aug 2014 12:16:59 -0400 Michael Black <et472@ncf.ca> wrote:

> 
> On Fri, 22 Aug 2014, Todd wrote:
> 
> > On 08/22/2014 08:46 PM, Balwinder S Dheeman wrote:
> >> On 08/23/2014 06:41 AM, Todd wrote:
> >>> Hi All,
> >>> 
> >>> I need to make a bootable USB drive with DOS 6.22 on
> >>> it to do a bunch of BIOS flash updates.
> >>> 
> >>> I have an image of an old DOS 6.22 floppy drive,
> >>> but can't figure out how make it bootable on
> >>> a USB drive.
> >> 
> >> Try dd if=<path_to/>msdos_6.22.img of=/dev/sdX
> >> 
> >> where X is for the USB drive; make sure the MS-DOS image bootable.
> >> 
> >>> And, Free DOS crashes the flash update utility.
> >> 
> >
> >
> > Tried that.  Didn't work.
> >
> How did you make the "image"?
> 
> If you just copied that floppy, stuff is probably missing so it won't 
> boot.  You need an actual image of the boot disk, which includes some 
> hidden files, but also some code at the right place on the floppy that is 
> read and executed to pull in the rest.
> 
> That's how Linux floppies were made bootable, the boot code at on the 
> floppy.  Even booting from a CDROM, the same arrangement is done, so one 
> can put a bootable floppy disk image onto a CDROM in the proper fashion 
> and boot from the CDROM.
> 
> I seem to recall a USB flash drive may be more complicated, certainly I've 
> fiddled around with doing that sort of thing and it didn't always work.

A USB 'drive' is something like a 'real hard drive', but not exactly. It is 
different from either a CD-ROM or a Floppy as far as the BIOS is concerned.

> 
>    Michael
> 
>                                                                          

-- 
Robert Heller             -- 978-544-6933
Deepwoods Software        -- Custom Software Services
http://www.deepsoft.com/  -- Linux Administration Services
heller@deepsoft.com       -- Webhosting Services
                                                                                                                         

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#11821

FromGrant <omg@grrr.id.au>
Date2014-08-24 09:50 +1000
Message-ID<3i9iv9lojoemnlep1srlnfb0njheh8r3o5@4ax.com>
In reply to#11820
On Sat, 23 Aug 2014 12:28:22 -0500, Robert Heller <heller@deepsoft.com> wrote:

>A USB 'drive' is something like a 'real hard drive', but not exactly. It is 
>different from either a CD-ROM or a Floppy as far as the BIOS is concerned.
>
Interpretation is BIOS selectable in some cases, does USB use floppy, 
CDROM or HDD emulation? In any case an older GA-G33M-DSS2R mobo I use 
cannot boot from USB, so I discovered a workaround using non-msdos, 
rather than burn a CD.

I'm inclined towards Henrik's solution, use native Linux. 

Grant.

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#11824

FromJerry Peters <jerry@example.invalid>
Date2014-08-24 20:14 +0000
Message-ID<ltdh3p$rad$1@dont-email.me>
In reply to#11810
Todd <Todd@invalid.invalid> wrote:
> On 08/22/2014 08:46 PM, Balwinder S Dheeman wrote:
>> On 08/23/2014 06:41 AM, Todd wrote:
>>> Hi All,
>>>
>>> I need to make a bootable USB drive with DOS 6.22 on
>>> it to do a bunch of BIOS flash updates.
>>>
>>> I have an image of an old DOS 6.22 floppy drive,
>>> but can't figure out how make it bootable on
>>> a USB drive.
>>
>> Try dd if=<path_to/>msdos_6.22.img of=/dev/sdX
>>
>> where X is for the USB drive; make sure the MS-DOS image bootable.
>>
>>> And, Free DOS crashes the flash update utility.
>>
> 
> 
> Tried that.  Didn't work.

Had to go look on another computer to find out how I built my last dos
boot disk for a bios upgrade. Freedos wouldn't even boot so I had to
use real dos.

Syslinux, www.syslinux.org   specifically memdisk, although you'll
also need to research syslinux if you intend to use it to make the USB
stick bootable.

You can also use grub or grub2 to make the USB stick bootable if
you're more comfortable with those. I'd assume LILO will also work,
but I haven't  touched it in years.

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#11811

FromRich <rich@example.invalid>
Date2014-08-23 04:24 +0000
Message-ID<lt951q$gok$1@dont-email.me>
In reply to#11807
Todd <Todd@invalid.invalid> wrote:
> Hi All,

> I need to make a bootable USB drive with DOS 6.22 on
> it to do a bunch of BIOS flash updates.

> I have an image of an old DOS 6.22 floppy drive,
> but can't figure out how make it bootable on
> a USB drive.

1) Go to google
2) type in "installing dos 6.22 on usb flash drive" in search box
3) hit "search"
4) Open third search result
(https://blogs.oracle.com/dragonfly/entry/dos_bootable_usb_flash_drive)

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#11812

FromTodd <Todd@invalid.invalid>
Date2014-08-22 21:35 -0700
Message-ID<lt95j2$j9o$1@dont-email.me>
In reply to#11811
On 08/22/2014 09:24 PM, Rich wrote:
> Todd <Todd@invalid.invalid> wrote:
>> Hi All,
>
>> I need to make a bootable USB drive with DOS 6.22 on
>> it to do a bunch of BIOS flash updates.
>
>> I have an image of an old DOS 6.22 floppy drive,
>> but can't figure out how make it bootable on
>> a USB drive.
>
> 1) Go to google
> 2) type in "installing dos 6.22 on usb flash drive" in search box
> 3) hit "search"
> 4) Open third search result
> (https://blogs.oracle.com/dragonfly/entry/dos_bootable_usb_flash_drive)
>

"following steps where all done in Microsoft Windows XP"

Damn!

Any ideas how to do i in Linux?

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#11816

Fromgazelle@shell.xmission.com (Kenny McCormack)
Date2014-08-23 10:28 +0000
Message-ID<lt9qbg$bgc$3@news.xmission.com>
In reply to#11812
In article <lt95j2$j9o$1@dont-email.me>, Todd  <Todd@invalid.invalid> wrote:
...
>"following steps where all done in Microsoft Windows XP"
>
>Damn!
>
>Any ideas how to do i in Linux?

Actually, although not explicitly stated, the article implies that it
*was*, in fact, done under Linux, since the words after "Microsoft Windows
XP" were "virtual machine".  So, you an infer (albeit at some risk), that
he was running some VM software under Linux.

Or, as another poster on this thread put it:

>You could try using QEMU, just use a your DOS image instead of FreeDOS:
>http://jachermocilla.blogspot.nl/2009/11/making-dos-bootable-usb-disk-from.html

FWIW, the VM software of choice these days for Linux users seems to be
(Sun/Oracle) VirtualBox, but of course QEMU is not to be denied.  Also in
the FWIW category: I don't know if any of this helps you; you may not be
interested in *any* MS and/or Windows derived solutions.

Totally changing the subject: Have you considered network (PXE) booting
instead of USB?  In my experience, more BIOSes support PXE than support USB
(I.e., I've seen BIOSes that have PXE and not USB, but never the converse).

I mention this because while I've never played with USB booting (and it
does seem from reading this thread that it is not at all trivial to setup),
I have done the PXE thing and it is trivial to boot DOS thereby (once you
have the PXE server itself setup).  Granted, there are a lot of steps
involved in setting up a PXE server, but Knoppix comes with a ready-to-go
script that does it all for you, which is what I used when I did this.

-- 
Is God willing to prevent evil, but not able? Then he is not omnipotent.
Is he able, but not willing? Then he is malevolent.
Is he both able and willing? Then whence cometh evil?
Is he neither able nor willing? Then why call him God?
~ Epicurus

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#11822

Fromfaeychild <faeychild@noreply.afraid.com>
Date2014-08-24 10:43 +1000
Message-ID<ltbcfi$mid$1@dont-email.me>
In reply to#11816
Kenny McCormack wrote:

Is God willing to prevent evil, but not able? Then he is not omnipotent.
Is he able, but not willing? Then he is malevolent.
Is he both able and willing? Then whence cometh evil?
Is he neither able nor willing? Then why call him God?
~ Epicurus


Read Neville Goddard. He has a very interesting interpretation.

 
-- 
--
faeychild
Running kde on 3.12.25-desktop-3.mga4 kernel.
Mageia release 4 (Official) for x86_64

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#11825

From"Chris F.A. Johnson" <cfajohnson@gmail.com>
Date2014-08-24 19:35 -0400
Message-ID<9e9qcb-tg5.ln1@chris.tor>
In reply to#11822
On 2014-08-24, faeychild wrote:
> Kenny McCormack wrote:
>
> Is God willing to prevent evil, but not able? Then he is not omnipotent.
> Is he able, but not willing? Then he is malevolent.
> Is he both able and willing? Then whence cometh evil?
> Is he neither able nor willing? Then why call him God?
> ~ Epicurus
>
> Read Neville Goddard. He has a very interesting interpretation.

  I couldn't find anything he said WRT that quotation.

  The only statement of his I found that made sense is, "Faith is
  believing what is unbelievable." He is totally unbelievable.

-- 
Chris F.A. Johnson

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#11826

Fromgazelle@shell.xmission.com (Kenny McCormack)
Date2014-08-24 23:46 +0000
Message-ID<ltdtgh$m99$4@news.xmission.com>
In reply to#11825
In article <9e9qcb-tg5.ln1@chris.tor>,
Chris F.A. Johnson <cfajohnson@gmail.com> wrote:
>On 2014-08-24, faeychild wrote:
>> Kenny McCormack wrote:
>>
>> Is God willing to prevent evil, but not able? Then he is not omnipotent.
>> Is he able, but not willing? Then he is malevolent.
>> Is he both able and willing? Then whence cometh evil?
>> Is he neither able nor willing? Then why call him God?
>> ~ Epicurus
>>
>> Read Neville Goddard. He has a very interesting interpretation.
>
>  I couldn't find anything he said WRT that quotation.
>
>  The only statement of his I found that made sense is, "Faith is
>  believing what is unbelievable." He is totally unbelievable.

Which is a variation on Twain:

    "Faith is believing things you know ain't so."

(I'm kidding about the "variation" comment; I have no idea who said it first)

-- 
When people wish to comment on something on which they have personal 
knowledge, but do not wish to convey the fact that it is personal 
knowledge, they often qualify their statement with "it's my 
understanding".  For instance, it's my understanding that when some 
women are depressed they sit on the futon in a Snuggie, watch Lifetime, 
and eat a whole tub of Rocky Road ice cream.

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#11817

FromRich <rich@example.invalid>
Date2014-08-23 13:26 +0000
Message-ID<lta4pk$1sn$1@dont-email.me>
In reply to#11812
Todd <Todd@invalid.invalid> wrote:
> On 08/22/2014 09:24 PM, Rich wrote:
> > Todd <Todd@invalid.invalid> wrote:
> >> Hi All,
> >
> >> I need to make a bootable USB drive with DOS 6.22 on
> >> it to do a bunch of BIOS flash updates.
> >
> >> I have an image of an old DOS 6.22 floppy drive,
> >> but can't figure out how make it bootable on
> >> a USB drive.
> >
> > 1) Go to google
> > 2) type in "installing dos 6.22 on usb flash drive" in search box
> > 3) hit "search"
> > 4) Open third search result
> > (https://blogs.oracle.com/dragonfly/entry/dos_bootable_usb_flash_drive)
> >

> "following steps where all done in Microsoft Windows XP"

You use David's suggestion of this tool:
http://www.filetransit.com/view.php?id=88316

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#11818

FromThe Natural Philosopher <tnp@invalid.invalid>
Date2014-08-23 15:11 +0100
Message-ID<lta7e8$kbs$2@news.albasani.net>
In reply to#11817
On 23/08/14 14:26, Rich wrote:
> Todd <Todd@invalid.invalid> wrote:
>> On 08/22/2014 09:24 PM, Rich wrote:
>>> Todd <Todd@invalid.invalid> wrote:
>>>> Hi All,
>>>
>>>> I need to make a bootable USB drive with DOS 6.22 on
>>>> it to do a bunch of BIOS flash updates.
>>>

which suggests to me that you wont be able to boot into a virtual 
machine to do the job as some are suggesting

Need bare metal





>>>> I have an image of an old DOS 6.22 floppy drive,
>>>> but can't figure out how make it bootable on
>>>> a USB drive.
>>>

Is it a bootable disk?


>>> 1) Go to google
>>> 2) type in "installing dos 6.22 on usb flash drive" in search box
>>> 3) hit "search"
>>> 4) Open third search result
>>> (https://blogs.oracle.com/dragonfly/entry/dos_bootable_usb_flash_drive)
>>>
>
>> "following steps where all done in Microsoft Windows XP"
>
> You use David's suggestion of this tool:
> http://www.filetransit.com/view.php?id=88316
>


-- 
Everything you read in newspapers is absolutely true, except for the 
rare story of which you happen to have first-hand knowledge. – Erwin Knoll

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#11828

FromTodd <Todd@invalid.invalid>
Date2014-08-24 19:43 -0700
Message-ID<lte7op$gfv$1@dont-email.me>
In reply to#11818
On 08/23/2014 07:11 AM, The Natural Philosopher wrote:
>
> Is it a bootable disk?
>

If I dd the image to a floppy (which I don't have anymore),
it will boot.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
the riddle wrapped in an enigma wrapped
in a couple slices of baloney
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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#11829

FromTodd <Todd@invalid.invalid>
Date2014-08-24 19:46 -0700
Message-ID<lte7u3$gfv$2@dont-email.me>
In reply to#11817
On 08/23/2014 06:26 AM, Rich wrote:
> You use David's suggestion of this tool:
> http://www.filetransit.com/view.php?id=88316

I have tried ms-sys.  It copies Free DOS stuff to
the boot sector.  And, msdos 6.22 bitches about
it being the wrong version

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#11815

FromHuibert Bol <huibert.bol@quicknet.nl>
Date2014-08-23 08:31 +0200
Message-ID<lt9cfd$g7s$1@dont-email.me>
In reply to#11807
Todd <Todd@invalid.invalid> wrote:

> I need to make a bootable USB drive with DOS 6.22 on
> it to do a bunch of BIOS flash updates.
>
> I have an image of an old DOS 6.22 floppy drive,
> but can't figure out how make it bootable on
> a USB drive.

You could try using QEMU, just use a your DOS image instead of FreeDOS:
http://jachermocilla.blogspot.nl/2009/11/making-dos-bootable-usb-disk-from.html

-- 
Huibert
"Okay... really not something I needed to see."  --Raven

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