Last Updated on October 2, 2010 by Dave Farquhar
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.
David Farquhar is a computer security professional, entrepreneur, and author. He started his career as a part-time computer technician in 1994, worked his way up to system administrator by 1997, and has specialized in vulnerability management since 2013. He invests in real estate on the side and his hobbies include O gauge trains, baseball cards, and retro computers and video games. A University of Missouri graduate, he holds CISSP and Security+ certifications. He lives in St. Louis with his family.
And they said the floppy was dead!