Creating a MS-DOS Boot Disk

What is a boot disk?
A boot disk will allow you to boot off of a diskette instead of your hard drive.


Creating a MS-DOS boot disk
Note: These steps are for users who have MS-DOS installed on the computer. If you have any version of Windows follow the below steps for your version of Windows.

To create a MS-DOS diskette, begin by getting to the DOS directory by typing:

cd\dos

Once at the C:\DOS directory, skip to copying files.


Once you are in DOS and at the correct directory as instructed in the above sections by operating system, you are ready to create your bootable diskette. Insert a diskette that does not contain any information (it will be erased).

At the prompt, if you have MS-DOS 6.2 / Windows 3.x / Windows 95 / Windows 98, type:

FORMAT A:/S

If you have MS-DOS 5.0 type using double density 5.25" diskettes type:

FORMAT A: /360 /S

If you have MS- DOS 3.11 through 4.0 using double density 5.25" diskettes, type:

FORMAT A: /4 /S

Once the diskette has been formatted and the system has been transferred, you should be returned to your original directory. In this directory, type:

copy format*.* a: [PRESS ENTER]
copy fdisk*.* a: [PRESS ENTER]
copy mscdex*.* a: [PRESS ENTER]
copy sys*.* a: [PRESS ENTER]
copy edit*.* a: [PRESS ENTER]
copy qbasic*.* a: [PRESS ENTER] (Win 95/98 users skip this line)
copy debug*.* a: [PRESS ENTER]
copy himem*.* a: [PRESS ENTER]
copy emm386*.* a: [PRESS ENTER]


Once you have copied the above files, create an autoexec.bat and a config.sys. Get to the floppy drive by typing A:, once at the floppy drive, type:

copy con autoexec.bat [PRESS ENTER]
@echo off [PRESS ENTER]
LH A:\MSCDEX.EXE /D:CDROM [PRESS ENTER] (this line is used for your CD-ROM drive).
LH A:\MOUSE.* [PRESS ENTER] (skip line if you did not copy mouse file, the * is either sys / com).

Press and hold CTRL + Z - this should return ^Z. Once this is displayed, press enter to copy the file.

copy con config.sys [PRESS ENTER]
device=a:\himem.sys
dos=high,umb
device=a:\emm386.exe noems
files=30
buffers=20
devicehigh=a:\oakcdrom.sys /d:CDROM (this line is used for your CD-ROM drive).

Press and hold CTRL + Z - this should return ^Z. Once this is displayed, press enter to copy the file.

Congratulations, after completing the above steps you should now have a bootable floppy diskette.

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