How can I make my computer boot from a floppy/CD/DVD or USB stick?

In the BIOS of your computer, search for an option that mentions about the “Boot sequence” and make the boot sequence start with “A” (for the floppy drive), or “D” for the CD-ROM drive (you may have another drive letter assigned to the CD-ROM drive) or USB flash drive/USB or the option called “Legacy USB Support”. Save the changes you have made in the BIOS and restart the computer with the floppy disk/CD/DVD/USB disk inside.

Now the computer should boot from the selected floppy disk/USB disk/CD/DVD that contains east-tec DisposeSecure.