.. can I try Uniflash to backup my bios settings in hard disk or floppy disk without harming my motherboard.
Sounds like you want to back up your CMOS settings? Backing up your BIOS will back up your DPMI information, but as the DPMI data is rechecked every switch-on I don't know that this will be of any use. You should be able to find on the Web several utilities to back up and restore CMOS (I wrote one in GWBASIC many years ago). For example: this
. These generally operate under a real-mode operating system such as DOS.