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  1. Hello,
    made someone these MS Client settings work with MS-DOS 6.22 / 7.1?
    I just copied C:\NET folder in my virtual machine and copied network starting code to Autoexec.bat and tried to make config.sys with same settings..
    But i have problems: with MS-DOS 6.22, net initialize command i get Protocol manager is not present – additional message to same message in Freedos, net start is fine. C:\NET is path.
    In MS-DOS 7.1 net initialize is fine, no additional message, but net start – give Error 1: An internal error occurred.
    I pretty sure that settings is fine, i tried lots of things, i would really appreciate info that these setting are working with MS-DOS with someone, i also tried it on physical machine with Broadcom 5721m NIC, same error with MS-DOS 7.1. I tried MS Client installed by myself and that some package its the same.
    Would like to use MS-DOS because of games compatibility.

    1. MSDOS – When, i change redictor to basic, im not getting that Error1 error. BTW i never full get, what is difference between full and basic.. Its something with domain and Windows NT..

      BTW i trying to create some MS-DOS networking guide with all info available, only for transferring data for gaming machines:

      1. Ok i made MS-DOS 7.1 working, with MS-DOS 6.22 i still have that protman not present problem, i just copy pasted your NET folder and lines for autoexec, so probably MS-DOS 6.22 need some additional change.

        Back to MS-DOS 7.1:
        Problem was IFSHLP.SYS, i used some which i found in system (size 3 708) instead of that from network package(size 4644), with that from MS Client its network running fine, i hope that i will not cause some problems with system compatibility.

        I wonder there is some FCBS system variable, by default is i thing 4,4 is should be something for networking, tried someone mess with it?
        BTW in some tutorial (i thing that was from Jacco) i read that network block has to be started before MSCDEX, other there is some conflict too, i could help some people too, for now im not using cd rom.
        – I had that problem with internal error, with all memory mods and managers – EMS, NO EMS, Realmode, JEMM EMS, QEMM ems, JEMMEX so its not related, i can confirm the net is working with EMS too it, didnt tested other modes after fix yet.
        – Maybe someone could help, that package is working with VMware too, its using exactly same NIC to emulate, so no changes needed.

        1. Next step how to make package better, would be start whole Network stack from some batch command and unload it (or at least part which is possible) Because Rayer ( was able to to convert /start whole netbootdisk,com for HDD, its originally floppy MS Client full boot image, to make it startable after boot and its running fine. Same as ODI SHIMs.. and native packet drivers could be run from booted system too.
          Whole point is not have to reboot, after using network stack, because when i have to reboot, there is not big point of use DOS network stack, because on multiboot machine, you can reboot to modern OS to use full blown networking..

          Rebooting is simply waste of time.

          Its good that MS Client dont need any config.sys drivers, i was experimenting with MS Client minimal install too, what is simply MS LanMan and here are 3 drivers for config and only you them not working with devload loader that is protman.dos.. others can be loaded with devload. Full MS client is this protman loading by other way so this driver is not needed in config.sys

          1. I was further debugging MS-DOS 6.22 with package. I looked at the help of net initialize, there is info that it Loads protocol and network adapter driver without binding them to Protocol Manage, so that message that network manager is not present is not big deal from that point..
            So i tried to remote network share access from DOS machine to Win98,Win2K,WinXP and WIn7 and its working with all, even when ping to hostname is not working, probably MSclient ping.exe doesnt support some net networking stuff..
            What is not working is sharing from DOS machine to all OS above, i create the shares, but im unable to access them, ping to Dos machine is working fine.
            Hmm, i found out if i replace share.exe with that share.exe from DOS 7.1.. net initialize message is now without that Protocol manager is not present message.. i didnt expected that is connected, but it is. Net use is still working, sharing doesnt – i get The network path was not found message. With FreeDOS its the same.

            I also dunno why ipconfig c:\Net shows domain name Home and not my domain name, defined in C:\Net *ini files..

          2. Ok, i made MS-DOS 7.1 share work too even with Win 10 (read only) on physical machine, settings is the same as within Virtual machines, where is not working.
            I only have problem to make to work password protected shared folder on DOS machine, when i use net share ShareName=C:\Temp /FULL i can write, but when i tried to net share ShareName=C:\Temp /FULL:password, im not able to connect to share from Win2k,WinXp,Win7 etc.. i always got that credential are incorect. I know that in tuporial is used hostname=username doe it help with this problem, or why it is used?

  2. Your work is great. For some reason, FreeDos 1.2, will not install on any of my three HP or Compaq PCs, but HP loves to tweak things for proprietary use. However, your VDH file worked!!! Now I have access to some nice old DOS programs that still have usefulness. Has anyone tried to install Windows 3.11, which is basically a DOS Shell, on FreeDos? I’m going to try it later, because I have a box of old stuff in storage but I’ll have to locate it some day. A few programs only had Windows 3 installers.
    Thanks for your work.

  3. Hello Ulrich, awesome work you have done! I had a question, is it possible to use TCP/IP and NetBEUI simultaneously? Meaning I would share a folder from FreeDOS so Windows can file share but then have another drive shared on FreeDOS which would use NetBEUI????

  4. Super project. My congratulations. I have a question whether it is possible to transfer the image to a real computer. I have very old software that I would like to have installed on a real computer. I was able to install FreeDos 1.2 but I have a problem with starting the network. I would like to try to move your image to disk.

    1. Hi Mariusz,

      Happy new year! And thank you very much for your feedback.

      Transferring the image to a real computer will not work out of the box. You can do it, but you will need drivers for your network card: A NDIS driver is needed for MS Client, a packet driver or a packet driver shim for mTCP. Then you would have to change AUTOEXEC.BAT, FDCONFIG.SYS, SYSTEM.INI and PROTOCOL.INI to point to these drivers.

      Unfortunately these days my time is occupied by other things (job, family) and I am not practicing DOS Networking everyday any more. So the best place to ask questions about this should be the FreeDOS user list at:

      Thanks again!

  5. Hello, good job. I’d like to know how to get bigger the virtual screen under freedos in Orcale Virtualbox and how to get the Orcale Virtualbox virtual audio driver up and running?

  6. Do you happen to know why Serial I/O in a VirtualBox Guest OS is so bad? There seems to be some mentions of this in various threads on the Internet, but no known solution. Inbound data is lost, or paused (until more data is received or sent). I realize this is not a FreeDOS question, but you seem to have a lot of experience with DOS under VirtualBox.

  7. Excellent site, with detailed and very informative things about connecting modern OSs and FreeDOS. I need to connect my old Clipper database program (which works fine, even 20 years after it has been made) on Windows 7 pro PC. Since it is x64 Windows, I can’t use CMD/COMMAND to start old DOS programs and Windows XP Mode is not working good (extremly slow) on that machine (I don’t know why, since it works fine on other, completely same PCs?!??!).

    So I have to go back to FreeDOS under VirtualBox. But I am worried about the free RAM that I get after loading all drivers. It’s pretty low, cca 434K of conventional and 79K of UMB. It’s probably not going to be enough, but I’ll try something.

    Anyway, thanks a lot and best regards for having this site!

  8. I have build new VirtualBox images with FreeDOS 1.2. The new FreeDOS version makes a lot of things easier. There is now a great app called FDIMPLES which you can use to install additional packages from the install CD. The package manager FDNPKG works now per default – so you can easily update your DOS system. Also installing networking is much simpler.

    Have fun!

  9. Hello Ulrich,

    Finding and following the instructions on this page was the very first time I got a DOS machine of any kind on my home network:

    This does work but it’s buggy and necessarily needs tweaking if you don’t strictly use DHCP. I found all the places where I have to change the IP address in the MSCLIENT folder .INI files and in a HOSTS file and a couple others where my machine’s IP needed to be corrected (I don’t use DHCP).

    Couple other settings in the .INI files as well.

    What doesn’t seem to work is copying files through the file system and I can only imagine why…FreeDOS crashes with long Opcode errors when trying to move files in an Explorer window.

    Suffice it to say however, this is the first time I ever got a DOS machine to connect on my home network and the internet. I missed out back in the day when I was using nothing but dial-up networking to get into BBSes and later on the local dial-in number for internet access. I never got familiar then with MNC30 and wish I did because this would have been a much easier learning curve.

    I will be learning a lot about how this works and how to make it work better now that I have a working example. I hope to get this working on DR DOS 6.0 and Novell DOS 7.0 which are two OSes that I loved using back in the early to mid-90s.

    Thank you so much for your fantastic effort in putting this together! I have turned a corner with some problems I was having trying to make my own VM from scratch and think I can figure this out now.

    1. Thanks for sharing your experiences! The old address
      is still there, but it I’d recommend to use these new
      pages instead. I leave the old pages active because some other sites links to that, but a lot happened in the meantime.

      The crashes can be fixed with using a special line for JEMMEX in FDCONFIG.SYS – or using the old memory drivers from FreeDOS 1.0. I wrote about that in the official FreeDOS wiki at:

    1. Sorry, I never used USB in FreeDOS. I will look into this, but it may take some days. Thanks!

  10. Ulrich Hansen, your work is fantastic!

    All I need is to run a program in clipper with the network database.
    The only network resource I use is a “net use r: \\servidor\tussor”, which works perfectly.

    But 540 of free memory is not enough for this program.

    It would be possible to improve it?
    Or it is already configured to get the largest amount of available base memory?


    1. Just saw your comment. I am afraid I already tried to configure it to leave as much conventional memory free as possible. But of course check fdconfig.sys and autoexec.bat for drivers you don’t need. Or ask in the “freedos-user” forum – I am sure there are a lot of people with more experience in memory management. Thank you and good luck.

  11. Impressive project. Have d/loaded the FreeDos + Net image – works great with Virtual Box.
    This combination vastly outperforms Dos-In-A-Box which cannot handle record locking as it does not have share.exe.

  12. Bugfix.

    Some users reported problems when booting the FreeDOS1.1net image. Sometimes they received the message:

    Bad or missing Command Interpreter: C:\FDOS\BIN\COMMAND.COM c:\FDOS\BIN /E:1024 /p=C:\AUTOEXEC.BAT

    Sometimes it just crashed. This seems to be a problem of the Memory Manager JEMM in combination with VirtualBox. For now I have replaced it with an older version that should work.

    Please report, if you still see this error. Thank you!

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Ulrich Hansen