Z87-D3HP: Won't boot from USB

[laserbeam]

Hi,
I have a new xubuntu 13.04 system I've built and I'm looking to update the firmware on its SSD. To do this I'm using unetbootin on windows to create a bootable image on a FAT32 usb stick. However, regardless of what I do the new system boots straight to linux even though the USB is boot priority 1 in the bois. Even if I select the usb stick from the boot menu the syste still boots straight through to Linux.

Can someone help me to understand what's going on here please?


Regards,
David

[ysw]

have u tried to plug your usb bootable drive in usb2.0 port?
how about other fat32 bootable DOS usb stick? work on usb3.0/usb2.0 port?

[laserbeam]

I haven't tried that but I will. I don't have a second fat32 stick to hand I'm afraid though I did try a small fat stick, which also failed.


Regards,
David