How to Create a Bootable DOS USB Drive. DOS isnt widely used anymore, but youre still likely at some point to need to boot into a DOS environment. Windows built in formatting utility lets you create a DOS bootable floppy drive, but not a USB drive. 3 Dimensional Shapes Activities Worksheets For Preschool. Heres how to get around that. DOS may be a relic of the past, but you wouldnt know that from reading instructions written by manufacturers for BIOS updates, firmware updating utilities, and other low level system tools. They often require you to boot into DOS to run the utility. We once formatted our floppy disks with MS DOS using the format utility built into Windows, but most computers dont have floppy disk drives anymore. Before you can install Windows 7 from a USB flash drive, you must properly format the drive and then copy the setup files to it. Heres how. Ive played around a bit and was successful in installing freeDOS onto my 8g flash drive. Many no longer even have optical disc drives. Fortunately, theres a free third party utility that lets you quickly create a DOS bootable USB drive. Step One Use Rufus to Format Your USB Drive. Windows built in formatting utility doesnt allow you to select the Create an MS DOS startup disk option when formatting a USB drivethe option is grayed out in Windows 7 and not available at all in Windows 8 and 1. Instead, well be using a tool named Rufus. Its a fast, free, lightweight application that includes Free. DOS. First, download Rufus and launch it. WinRE_RMPREP.jpg' alt='Install Freedos To Usb Flash Drive' title='Install Freedos To Usb Flash Drive' />Freedos Usb SupportRufus is a portable app that doesnt require any installationyou will see the Rufus application as soon as you launch the downloaded. Creating a DOS bootable USB drive in Rufus is simple. First, connect your USB drive to the computer and select it in the Device dropdown menu. Note that this process will erase the contents of your USB drive, so make sure youve backed up any important files on the USB drive first. From the File System dropdown menu, choose the FAT3. The DOS option requires FAT3. NTFS, UDF, and ex. FAT. Select the Create a bootable disk using option and then choose Free. DOS from the dropdown menu next to that option. Click the Start button to format the disk and copy the files necessary to boot into Free. DOS. The formatting process should be extremely quickusually a matter of secondsbut it can take longer depending on the size of your USB drive. Step Two Copy Your Files Over. Creating a Bootable DOS Flash Drive the. FreeDOS and. how i can install windows xp from usb i means how i make usb. Installing FreeDOS uses the same process whether you install FreeDOS in a PC emulator or on actual hardware. FreeDOS. At the FreeDos 1. Final screen, select 1 to Install to Hard disk using FreeDos setup. NOTE Leave the FreeDOS CD in the drive Type 1 to Boot FreeDOS from CD. FreeDOS USB Many BIOS flash utilities can only be run in DOS. Create a bootable USB drive with Ubuntu Linux that boots to FreeDOS. How to create a bootable USB stick to flash. USB with FreeDOS. Select FreeDOS as the distribution and make sure the type is USB Drive. UNetbootin_FreeDOS_Download_wm.png' alt='Install Freedos To Usb Flash Drive' title='Install Freedos To Usb Flash Drive' />You have probably created this boot drive because you have a DOS based program to run, such as a BIOS update utility or another low level system program. To actually run these files from DOS, you will need to copy them over to your newly formatted USB drive. For example, you may have a BIOS. BIN and FLASHBIOS. BAT file you need to run in DOS. Copy these files into the root directory of the USB drive after formatting it. Step Three Boot Into DOSYou can now boot into DOS by restarting your computer with the USB drive connected. If your computer does not automatically boot from the USB drive, you may need to change your boot order or use a boot menu to select the device from which you want to boot. Once you are in DOS, you can run the program you copied to your USB drive by typing its name at the DOS prompt. Follow any instructions provided in the manufacturers documentation to run the application. These utilities still use DOS to ensure they have low level access to the hardware without any other programs interfering or Windows getting in the way. This helps ensure BIOS updates and other low level operations work properly. You also could use a bootable USB drive to run old DOS applications, but that tends not to work so well. You would be much better off using DOSBOX to run old DOS games and other applications.