MS-DOS 6.22 PXE Boot on a Raspberry PI

pxemsdos.md

Booting MS-DOS 6.22 over PXE on a Raspberry PI

Trying to boot MS-DOS 6.22 on an older computer with no floppy drive, however, there is PXE LAN boot support. These instructions installs and configures PXE Linux on the Raspberry PI and sets up a bootable floppy image for MS-DOS 6.22.

Install dependencies

apt-get install dnsmasq pxelinux

Set up dnsmasq

Edit the /etc/dnsmasq.conf:

port=0
interface=eth0
dhcp-range=192.168.1.0,proxy,255.255.255.0
dhcp-script=/bin/echo
pxe-service=x86PC, "PXE Boot Menu", pxelinux
dhcp-boot=pxelinux.0
enable-tftp
tftp-root=/var/lib/tftpboot

Create directories: mkdir -p /var/lib/tftpboot/pxelinux.cfg

Restart dnsmasq systemctl restart dnsmasq

Set up pxelinux

Edit /var/lib/tftpboot/pxelinux.cfg/default

MENU TITLE Network Boot Menu
DEFAULT menu.c32

Create file links:

ln -s /usr/lib/PXELINUX/pxelinux.0 /var/lib/tftpboot/
ln -s /usr/lib/syslinux/modules/bios/{ldlinux,menu,libcom32,libutil}.c32 /var/lib/tftpboot/
ln -s /usr/lib/syslinux/memdisk /var/lib/tftpboot/

Configure the bootable floppy image

Copy the first floppy drive image of MS-DOS 6.22 to /var/lib/tftpboot/ and rename it to msdos622.img.

Add to /var/lib/tftpboot/pxelinux.cfg/default

LABEL MS-DOS
  MENU LABEL MS-DOS 6.22
  KERNEL memdisk
  INITRD msdos622.img