For this, you need a USB flash disk at least with 128MB capacity & DOS packages (2.7MB) which available from this link. Extract on your local drive directory (e.g.: C:\) just like image shown below.
Execute program hpusbfw.exe after plug in the USB disk. Automatically, the program will detect & recognize your flash disk (it's refers to H:\ drive letter on my experience).
Browse the DOS file system on the same path where you execute the program then click Start button to begin the formatting process.
Note that it will erase all of files on USB disk, so be careful & backup your data first.
Formatting process will established.
It's done & your flash drive is ready to boot.
If you checked it out from Windows Explorer, there's 3 files only on it. But actually, you can freely adding others DOS based utility tools you prefer. As an example, I added ghost software since I only have a deal with it.
Restart your computer & prepare for USB boot.
Here it is, a lovely C:\ prompt will appear. Next step is up to you. Have a good day.
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