The ultimate DOS boot disk

A little over a year ago, someone issued me a challenge: Make a boot disk containing the Microsoft network client and CD-ROM drivers. The problem is that the network client, plus the DOS boot files, plus a CD-ROM driver and MSCDEX almost always takes up more than 1.44 megs.
So I zipped up as much of the junk as I could and made a boot disk that extracted the Zip file to a ramdisk and connected to the network. I had tons of space left over. So I added some niceties like doskey and a mouse driver. I still had space left over. So then I started hunting down every network driver I could find so that one disk could service the mismash of NICs we’ve bought over the years.

It worked, but adding new drivers was beyond the ability of a lot of my coworkers. And I wanted to add a Windows-style network logon and TCP/IP configuration. I started coding it and some of it worked, but eventually I ran out of time so I abandoned it.

Meanwhile, someone else was doing the same thing, and his results were a lot better.

From the guy who brought you Bart’s Way to Create Bootable CD-ROMs, there’s Bart’s Modular Boot Disk.

To get a disk like mine, all you do is make a bootable floppy on a Windows 9x box, then download Bart’s network packages, including whatever NICs you want to support. Then pop back over to the modboot page and grab all the CD-ROM stuff. I made a disk that supports all of the CD-ROM drives Bart had drivers for, plus a half-dozen or so NICs from 3Com, Intel, and SMC, along with mouse support and doskey. I still had over 100K to spare.

If you find yourself just a little bit short of space, you can use the freeware fdformat to format a disk with just 16 root-directory entries and a large cluster size. Use the commmand fdformat a: /d:16 /c:2. The space that would normally go to the bigger root directory and FAT ends up going to storage capacity instead. But don’t try to run fdformat in Windows–find a Win98 box and boot it in DOS mode.

To make life easier on yourself, you might make the disk, then image a blank and keep the image around for when you want to format a maximum-capacity 1.44-meg disk.

One thought on “The ultimate DOS boot disk

  • August 13, 2002 at 10:25 pm

    And they said the floppy was dead!

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