How to create a boot disk

What is a boot disk?
A boot disk will allow you to boot off of a diskette instead of your hard drive. This diskette can be used to fix issues that may arise during the lifetime of your computer or to help load older MS-DOS games. Keep in mind this diskette is completely different than a Restore CD or Disc that may have been included with your computer.

Tip: After you have created a boot diskette, it is highly recommended that you write-protect the diskette to prevent possible computer virus infection and to help the diskette from being erased.


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.

Creating a Windows 3.X boot disk
Note: These steps are for users who have Windows 3.x installed on the computer.
To create a Windows 3.x diskette, from Windows Program manager, click File and then choose the option to Exit Windows, which will get you to a prompt; at the prompt, type:

cd\dos

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


Creating a Windows 95 boot disk 
Note: These steps are for users who have Windows 95 installed on the computer.
In Windows 95, Microsoft has created a new method of creating a bootable recovery diskette. Unfortunately, however, this diskette does not support CD-ROM support and is missing a few recommended files. To do this, click Start, Settings, Control Panel, double-click the Add/Remove programs icon, click the Startup Disk and create disk.

Alternatively, to create a Windows 95 boot diskette manually from Windows, click Start, Shutdown, and choose the option to restart the computer in a MS-DOS prompt. At the prompt, type:

cd\windows\command

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



Creating a Windows 98 and ME boot disk
Note: These steps are for users who have Windows 98 or Windows ME installed on the computer.
An excellent feature of Windows 98/ME is its boot diskette. Using Windows to create you a Windows 98 boot diskette will give you all the needed files as well as CD-ROM support. To create a Windows 98 boot diskette, click Start, Settings, Control Panel, double-click the Add Remove programs icon, click the Startup Disk and create disk.
Alternatively, to create a Windows 98 boot diskette manually from Windows, click Start, Shutdown, and choose the option to restart the computer in a MS-DOS prompt. At the prompt, type:

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

Copying additional files
NOTE: When making a boot disk, if you are running "Stacker" or some kind of a DoubleSpace or drive swapper program, this could not work

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]
If you are planning to use this diskette as a diskette to load games or you feel that you need mouse support, you will need to copy the mouse driver onto the boot diskette. The MS-DOS mouse driver is mouse.com or mouse.sys. Locate this file and copy it to your bootable diskette.
For CD-ROM support, visit our CD-ROM drivers page for information on loading your CD-ROM driver.
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 or 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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