Windows' built-in formatting utility lets you create a DOS-bootable floppy drive, but not a USB drive.

Here’s how to get around that.

Related:Do you gotta modernize your system’s BIOS?

How to Create a Bootable DOS USB Drive

They often require you to boot into DOS to launch the utility.

Many no longer even have optical disc drives.

Fortunately, there’s a free third-party utility that lets you quickly create a DOS-bootable USB drive.

ubd_1

Instead, we’ll be using a tool named Rufus.

Its a fast, free, lightweight software that includes FreeDOS.

Related:What Is a “Portable” App, and Why Does It Matter?

ubd_2

First, downloadRufusand launch it.

Creating a DOS-bootable USB drive in Rufus is simple.

First, connect your USB drive to the computer and select it in the “gadget” dropdown menu.

ubd_3

Related:FAT32 vs. exFAT vs. NTFS: What’s the Difference?

From the “File System” dropdown menu, choose the “FAT32” format.

nudge the “Start” button to format the disk and copy the files necessary to boot into FreeDOS.

ubd_4

Copy these files into the root directory of the USB drive after formatting it.

This helps ensure BIOS updates and other low-level operations work properly.

You would be much better offusing DOSBOX to run old DOS games and other applications.

ubd_5