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SYS command using IO.SYS and MSDOS.SYS and DR-DOS boot disk, was [Re: infrastructure for PDOS development]

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Rod Pemberton

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Apr 13, 2013, 10:28:33 PM4/13/13
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"kerravon" <kerr...@w3.to> wrote in message
news:e718cbc8-f9ab-4613...@googlegroups.com...
> On Friday, August 3, 2012 9:24:33 AM UTC+10, Rod Pemberton
> wrote:
> > "kerravon" <kerr...@w3.to> wrote in message
> >
> > > I think Freedos 1.1 won't work for me, because I need
> > > the "sys" command to work, and I have an io.sys and
> > > msdos.sys that need to be installed. But thanks for
> > > trying.
> >
> > Freedos has a sys.com.
>
> (but as discussed previously, not one that handles
> IO.SYS and MSDOS.SYS.
>

AIUI, FreeDOS uses KERNEL.SYS and COMMAND.COM. OpenDOS (or
DR-DOS) uses IBMBIO.COM and IBMDOS.COM.

1) I'd recommend finding an MS-DOS SYS command on the Internet
somewhere and use it. Use the MS-DOS SYS command to install
MS-DOS' IO.SYS and MSDOS.SYS to the correct locations on the
floppy disk. Next, COPY/B your files over their files. MS-DOS'
COPY (not XCOPY) preserves the correct file locations.

2) If an MS-DOS SYS command is not available, you'll have to make
the SYS command for FreeDOS or OpenDOS etc work for you. Use
their command to install their files. Next, you want to overwrite
their files with yours. Rename yours to their names. You may
need a special copy command to preserve locations like MS-DOS'
COPY command, or John Fine's Partcopy to overwrite their files.
Once the files are overwritten, attempt to rename the files to
your names, test to see if the disk boots ... or something like
that ... obviously experimental ...

> I successfully downloaded DRDOS from here:
>
>
http://www.codehosting.net/blog/BlogEngine/post/DR-DOS-boot-floppy-image.aspx
>
> and was surprised to find that there was no
> "format" command (nor "sys"). Is DRDOS
> incomplete?
>

Sorry, I don't know.

> Is there any version of MSDOS that is free
> for download (same as they made the compiler
> freely available)?

Sorry, I never heard about it if they did.

You should be able to find MS-DOS (5.00, 6.22, etc) and Windows
98/SE/ME (MS-DOS v7.10) boot disks fairly easily and openly on the
Internet. They should have an MS-DOS IO.SYS, MSDOS.SYS,
COMMAND.COM and perhaps also SYS.COM, FDISK.EXE, FORMAT.COM etc.
Also, in the "dark corners" of the Internet, you should be able to
find complete "copies" of various MS-DOS versions, Windows
98/SE/ME (for MS-DOS 7.10), perhaps even 2k/XP, etc not that I'm
recommending that you should do that, but they're probably still
around if seriously needed ... That might be the only way to
obtain certain obsoleted MS software. Alternately, you could pick
up a "used" version on eBay or perhaps Amazon etc.


Richard Bonner on comp.os.msdos.misc had similar sort of issues
with getting an HP laptop to boot with DR-DOS in "HP Laptop Won't
Boot DR-DOS" 12/20/12. I thought about attempting to construct a
working DR-DOS/OpenDOS boot disk to help with his problem, but I
didn't get around to it.


Rod Pemberton



Harald Peters

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Apr 22, 2014, 6:26:24 PM4/22/14
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What *DOS version Sys.com/sys.exe do you need ?

Op Sun, 14 Apr 2013 04:28:33 +0200 schreef Rod Pemberton
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