Using the Ultrabook I prepared an "emergency" Ubuntu USB boot image (used LinuxLive to transfer a downloaded .iso to a USB device) on an SD card in a USB-SD adaptor (so the card is in a USB socket, not the SD slot).
This worked fine.
But when I restart the Ultrabook using F12 to see the Boot Menu there is no text next to the USB option on the boot menu (and if I select it as the boot option I see Windows boot as normal).
If I select the Bios option on the F12 boot menu to go to the Boot menu in the Bios setup I still don't see any text on the USB line.
If I now re-power and use F12 I now do see "Mass Storage Device" (or something equivalent, can't remember) on the USB line and the machine now boots Ubuntu from it (and I can see the file system on the hard disk).
As far as I can tell, you need to go into the BIOS Setup but not do anything) before you use the F12 Boot menu if you want to boot from a USB device (well this one at least).
This would seem to be a BIOS bug? BIOS Version is 1.4
From my knowledge the USB boot option would not appear in F12 menu until an USB compatible and bootable device would be plugged in.
This means that you have to connect an USB bootable device to the notebook and then have to power up the unit and press F12 to get the menu.
I read also that not all devices might be fully compatible… so it would be really interesting to know if the same issue appears using an USB bootable flash memory stick…You have tried an combination of USB –SD adapter… I could be possible that this is the problem here.
Well the USB-SD "stick" does work properly in a different PC, and it does boot so I would suggest the USB-SD version is "bootable" and no different to a standard stick, I can't check a standard stick for a few days now, but will try.
I think it is a bug. At the very least there is some inconsistency!