Making a DOS boot disc that supports the mouse, optical drive, USB device requires a DOS boot floppy image file containing the device driver, and you need to edit the automatic batch program Autoexec.bat and the device configuration program Config.sys file in the DOS boot disk. For the average user, it is not easy to collect the drivers for the above devices and edit the system files, so users are advised to use the Free DOS boot floppy image files posted online. The DOS boot diskette image file used by this example is Cdrom-1218.ima. In addition, in order to make the DOS boot CD more practical, users also need to download the DOS utility Kit Dosapp-1218.rar and unzip it.
Use the Ultra ISO V8.62 to make a DOS boot disc image file that supports the mouse, CD drive, u disk, as described in the following steps:
1th step, Run Ultra ISO V8.62, in the Program main window click "File" → "new" → "Start disc image" menu command.
Step 2nd, open the Load Boot file dialog box, locate and select the Downloaded DOS boot diskette image file Cdrom-1218.ima, and then click the Open button.
Step 3rd, return to the Ultra ISO Program main window and locate and select the extracted DOS Utilities folder in the local directory pane. Then select and right-click all DOS tools and select Add Command.
The 4th step, after setting, click the "file" → "Save" menu command. Open the ISO File Save dialog box, set the file save location and name the file, and then click the Save button.