In the maintenance page go to more commands. See if there is a utility there called makedisk. It was a small batch file that was intended to make a back up disk.
For a complete back up you need a set of DOS disks. I also carry a DOS boot disk that allows me FDISK and FORMAT a hard drive.
The most important file is the BMDCPRMS.sys which are the machine parameters. Another file to look for is LEADCOMP.DAT but not all machines had that one.
George
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)