How to make a bootable MS-DOS USB Key CPSCI-240 – Fall 2012 Background In order to make a USB drive DOS bootable it has to be made into an active partition by formatting it with the HP USB Disk Storage Format tool version 2.1.8. This utility is already installed on the client systems in CS labs. The files contained on the CD-ROM have been modified specifically for the systems in the Computer Science labs The CD’s will not work in other computer labs; please see Jerry for more information. Follow these steps in a Computer Science lab: 1. Power on the system into Windows 7 (if not already powered on) and login. 2. Insert the CD-ROM labeled << USB-DOS BOOT DISC >> in the CD-ROM drive. 3. Insert the USB into one of the available slots on the Dell Optiplex systems. 4. To format the USB stick, the program is found at: STARTALL PROGRAMSHEWLETT-PACKARD COMPANYHP USB DISK STORAGE FORMAT TOOL. RIGHT CLICK and choose RUN AS ADMINISTRATOR. Enter YES when prompted. If prompted, enter your username and password to authenticate as an administrator (will only work in the first week of class; see Jerry or Professor Campbell after the first week). 5. Configure the utility with the following settings; enter your USERNAME in the Volume Label field. Select the USB drive under DEVICE. Select FAT for the File System type from the drop down box. Name the Volume Label. Select Quick Format. Select Create a DOS startup disk. Point to the D:\usbkey directory on the CD-ROM. 6. Press the START. 7. Reboot the computer with the CD and USB connected. The system will boot into MS-DOS off the CD. 8. Run the following commands, in this order: fdisk (select option 5 – ensure the USB is mounted on c:\ then hit ESC twice). sys c: attrib –r –s –h c:\io.sys attrib –r –s –h c:\msdos.sys attrib –r –s –h c:\drvspace.bin attrib –r –s –h c:\command.com xcopy r:\usbkey c:\ /S /Y 9. You should see a return that 1002 files were copied. Remove the CD, and reboot the system (CTRL-ALT- DEL). At this point, the system should boot off the USB drive into MS-DOS 6.22. Hamilton College Computer Science Jerry Tylutki – [email protected] .