Navigate to where you saved the DOS 6.22 ISO file. Click the 'USB Drive' option near the bottom of the window and select the drive letter that corresponds to your USB flash drive. Click 'OK' to create your bootable USB drive. DOS 6.22 boot CD ISO Image There are times when the Master Boot Record (MBR) can get messed up. If you go to reinstall the OS’s anyway sometimes it may be worth the extra step to boot up a DOS 6.22 boot disk and restore the MBR with the following command. Category: OS: Year: 2020: Description: Fully bootable CD Rom ISO image created by ImgBurn. A large file to download, but the CD you will create will be much handier for installing DOS in Virtual PC et al. Remember to exit the installation as soon as it boots, and partition your real or virtual hard drive using the FDISK command first.

Comments

• AFAIK, MS-DOS was not made to boot from optical disk (CD/DVD) or USB (except MS-DOS 7.1, which does work on CD), it's only for floppy disks. Floppy disks were what people used back in the 80's and early 90's for installing media on computers. Optical disks were not fully mainstream until about 1993 or 94, when operating systems, software, and other computer media started being sold on CD. So with that said, you already have the installation media extracted from your 7z file, but it's in the IMG format, the disk image file format used for floppy images, and it's most likely bootable.

• I don't know. But if you try making MSCDEX and making floppy boot work in CD Boot, it might work. Sorry i am doing good at Lua, not how DOS is made (it might be assembly)

• Actually in both cases making bootable image is trivial: you just embed your floppy image into larger CD or USB image. Use mkisofs -b option for that (other programs would surely support other options) and RMPrepUSB for USB.

  What's tricky - is to provide support for the USB and CD itself! Because by default BIOS would just emulate that mini-floppy for you.. Adobe photoshop cc 2016 full version with crack free download. and that's it. Your MS DOS would boot perfectly fine.. except it wouldn't see the CD and/or USB it just booted from!

• MS-DOS is made for floppy not CD's but compact flash will work just fine as well as SD card

• Um, DOS is not 'made' for booting from USB devices either. Although any BIOS that can make a USB drive look like a floppy or hard drive may work.

  Making a bootable CD is not too hard really. I use ImgBurn 2.4.4.0 that is posted here on Winworld. Just go in to its options and tell it to make a bootable CD, give it a 1.44mb or 2.88mb DOS image and the CD it writes should boot to that image. The main catch is you won't be able to see the rest of the CD unless the image loads the DOS CD driver for your machine and MSCDEX. While generic IDE drivers will work on most IDE machines, many machines will need different CD drivers. SATA CD drives will have to run in IDE emulation mode. If you need to experiment with the image, use rewritable CD-RW media.

• There's some funky grub stuff out there that can mount a floppy image on usb to ram and boot dos from it. It would then do emulation of the usb drive to enable some sort of r/w.
  I used to use that in my microdrives as an emergency boot disk when I was too cheap to go buy a newfangled (and smaller capacity) usb flash drive for the purpose, and I was trying to get rid of floppies. Set my d2x to mass storage mode, plug it in, and profit.

  I still use that thing as an oversized usb drive, but at least it can take pictures!

• to make a bootable CD I use ultra iso and back in the the day of dos computers I would
  use the sys command to put a boot on floppys I am not sure if you can use that command on a usb!

• You could store all the files on their and DOS could probably figure out which is which..

• All versions of DOS, including 7.1 and later, can not boot from a cdrom. The trick is to create a bootable floppy diskette, and set it to load the cdrom. For this to happen, you need to create a 1440 image, with a proper DOS bootsector, etc.
  Put in the boot files IBMBIO.COM and IBMDOS.COM (or IO.SYS and MSDOS.SYS for MSDOS), or IO.SYS and JO.SYS for Dos95. Then COMMAND.COM. You can put a range of local utilities, like fdisk, format. You can use a cdrom loader, eg eltorito.sys, or the like, which hooks up the cdrom through the boot chain.
  Use some sort of utility like XMSDSK to make the ramdrive, and set the ramdrive to R: and the cdrom to S:
  Lay the hard disk so it has an ISO format, and you can install all different versions of DOS on the same disk. An MS-DOS boot sector on the floppy can be used to install MS-DOS 5 to 6.22, as well as windows etc.
  When it comes time to cut the image, tell the proggie that your BOOTDSK is the boot disk of the day. You can have several boot images, and pick them from a menu.
  The idea behind the ramdrive is to make things quicker. A 4 Meg ramdrive should suit most needs.
  With Dos98 (ie 98/98SE/ME), JO.SYS is a proggie that provides the 'do you want the cdrom boot' before heading off to the hard drive. Some menu programs do this too, so if you're doing it by menu, you don't need JO.SYS there.

Tools Used:

bfi.exe (Build Floppy Image - to create bootable image from files)

mkisofs.exe (a tool to create/build the CDRom ISO image file)

build-iso.cmd (batch file to create floppy and iso image)

Dos 6.22 Iso Image

We will need some files from Windows ME or Windows XP startup disk

io.sys (Dos Input Output System file)
msdos.sys (Dos system file)
command.com (MS-Dos mode command line interpreter)
himem.sys (An extended memory manager that is included with DOS and Windows)
mscdex.exe (Microsoft CD-Rom Extension)
oakcdrom.sys (Generic CD-Rom driver, work with the most of all IDE CD-ROM drives)
xmsdsk.exe (Adjustable XMS RAMdisk Driver - Freeware)
ctmouse.exe (Mouse Driver For Dos - also works on USB Mouse - Freeware) or mouse.com

You can add your favorite Programs in the bootcd,
All you need to do is Edit autoexec.bat and config.sys and add all the required files inthe folder and double click on build-iso and you are ready to burn bootcd.iso

Example: You want to add Mcafee Antivirus in the bootcd, all you do is create a folder MCAFEE in the folder CD

and add a line in config.sys menu
menuitem=MCAFEE, McAfee Antivirus
add two more lines in config.sys
[MCAFEE]
include=DOS

and add 4 lines in autoexec.bat
:MCAFEE
COPY X:MCAFEE*.* R:
R:scanpm.exe /adl /all /clean
GOTO DOS

when you start your computer with this bootcd, you will get to menu where you can choose which program you want to run. In this example we will create 50Mb Ram Disk (You will have Minimum of 64Mb Memory)

Enter a choice: 1

You can easily create bootable cd,
all you have to do is add few lines in autoexec.bat and config.sys
and copy files in CD folder and double click on build-iso.cmd
and it creates a iso file BootCD.iso

Ms Dos 6.22 Bootable Iso Version

You can add as many items in the list but you are limited to 9 per screen
to add more items simply add submenu=MORE, More.. (under [MENU] block)
and add [MORE] in config.sys and you can add more menuitem there.