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Thread: Satellite U840-111 - USB Boot option not seen unless

  1. Satellite U840-111 - USB Boot option not seen unless
    #1
    Beginner
    Join Date
    Oct 2012
    Posts
    10
    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

  2. Re: Satellite U840-111 - USB Boot option not seen unless
    #2
    Master
    Join Date
    Jun 2009
    Location
    Italy
    Posts
    3,882
    Not quite sure if it’s a bug or not.

    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.

  3. Re: Satellite U840-111 - USB Boot option not seen unless
    #3
    Beginner
    Join Date
    Oct 2012
    Posts
    10
    Hi
    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!

  4. Re: Satellite U840-111 - USB Boot option not seen unless
    #4
    Akuma
    Guest
    Have you tried a different USB port?

    Maybe it only works on USB2 ports (the black ports, not the blue ports), or you need to change the USB option in the BIOS from USB3 to USB2

  5. Re: Satellite U840-111 - USB Boot option not seen unless
    #5
    Beginner
    Join Date
    Oct 2012
    Posts
    10
    Akuma, Hi, the laptop is now away at college so I can't check for a while. When it next comes back home I'll try to test, FWIW, I think I was using a USB2 port, but can't be sure, Cheers.

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