HOW TO BOOT INTO DOS FROM USB + DOWNLOAD LINK

What happen if you want to boot into DOS, but unfortunately your CD-ROM is not working or you may not have a bootable CD, well there is an alternative for this  i.e. Boot from USB

In order to boot from USB, you need the following

1. A USB
2. Format Utility by HP (Download)
3. DOS boot File          (Download)

Both files are password protected, password is taqi

Also your system should support booting from USB device, you can check that by going into BIOS
If you find the option than you are good to go, otherwise you cannot boot from USB.

So lets start

1. Download Format Utility by HP and DOS boot file from above given link
2. Extract these on your desktop
3. Plug in your USB 
4. Install HP format tool

after installation run "HP USB Disk Storage Format Tool" from desktop

5. Set file system to FAT 32
6. Put check mark on create a DOS startup disk, and than locate to the boot folder which you downloaded from above.

For me the path is

C:\Documents and Settings\Administrator\Desktop\boot

7.  Click on Start.

Note :  All data in the USB device will be remove after clicking on start, so make sure you have a backup of your data.