770Z Bios Update "FAILED"

[elportugues]

I am trying to update the Bios on my 770Z.
When I tried to create a bootable disket on A:\
the system is asking me to: "Insert a blank high-density diskette in drive A:\
Also I trying to created on D:\ on the 770Z and on an Acer Laptop that I have and received the same message.
When I tried to create the disk, the system responded: "Diskette error -try another on both areas(A:\ and D:\)

Any advise is welcome!

[elportugues]

Easy Solution:
I have a CDRom (Internal) and a Floppy Drive(External).
I took out the CDRom and put the Floppy Drive as internal.
No problem in making the bootable A:\ Bios Update Disk.
Already updated the Bios.
If this solution could help at list one more person I am more than satisfied.