VirtualBox
I need to set up a MSDOS virtual machine to run a program that talks to my vintage Magnavox GPS reference station.
I've done it in the past with VMWare but have pretty much switched over to VirtualBox now.
The problem is, at the moment the server connected to the GPS station is in the garage. I moved put the Magnavox in the garage because that's where the antenna wire is right now. Both antennas. The GPS antenna and the 420 MHz transceiver that will transmit DGPS corrections.
Anyway more on that later / elsewhere. The whole point of this page is to describe how to set up a virtual machine to run on a server, using VirtualBox.
I intend to try to get it going from the command line. In theory I should be able to open a VNC session to see the DOS window, let's see if the theory pans out.
Here we go.
Create a machine.
One CPU with 640K would be enough but I have to give it a minimum of 4MB! No network card. Minimum video RAM. No CDROM drive. This is so easy.
VBoxManage createvm --name MSDOS --ostype DOS --register VBoxManage modifyvm MSDOS --memory 1 --nic1 none --audio none VBoxManage modifyvm MSDOS --bioslogodisplaytime 1
The whole point is to talk to a Magnavox GPS receiver, and that happens on COM1
VBoxManage modifyvm MSDOS --uart1 0x3F8 4
Show the results of our labours
VBoxManage showvminfo MSDOS
Create virtual hard disk.
It does not have to be big. 5 megabytes should be plenty. "Fixed" means to pre-allocate the space. That makes the drive faster and hey, it's only 5 MB!
VBoxManage createhd --filename MSDOS.vdi --size 5 --variant Fixed
Connect the hard disk to the machine.
VBoxManage storagectl MSDOS --name IDE0 --add ide VBoxManage storageattach MSDOS --storagectl IDE0 --port 0 --device 0 --type hdd --medium MSDOS.vdi
Put the (virtual) MSDOS installer floppy into the (virtual) floppy drive
You can still download the installer from Microsoft MSDN! So I thought. It's an UPGRADER, you have to have MSDOS installed already. Microsoft, once again I spit on you. What are you thinking?
So instead I turned to FreeDOS from http://www.freedos.org/
# Register the FreeDos disc image VBoxManage openmedium dvd `pwd`/fdfullcd.iso # Attach the disc to the machine VBoxManage storageattach MSDOS --storagectl IDE0 --port 0 --device 1 --type dvddrive --medium `pwd`/fdfullcd.iso # Add a floppy drive to the machine VBoxManage storagectl MSDOS --name FD0 --add floppy # Register the floppy disk image VBoxManage openmedium floppy `pwd`/Magnavox.IMG # Attach it VBoxManage storageattach MSDOS --storagectl FD0 --port 0 --device 0 --type fdd --medium `pwd`/Magnavox.IMG
Fire it up.
VBoxHeadless -s MSDOS --vrdp on --vrdpport 5000-5010 --vrdpaddress 192.168.123.1 Oracle VM VirtualBox Headless Interface 3.2.8 (C) 2008-2010 Oracle Corporation All rights reserved. Listening on port 5000.
YAY! On the Macintosh now I can use the Microsoft RDP client that I downloaded from http://www.microsoft.com/mac/products/remote-desktop/default.mspx
Mount the image of the floppy drive and copy the contents to the virtual hard drive.
