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I have a Toshiba Satellite L50-A1-D6 with the latest (14 November 2014) BIOS update. I have removed Windows 8, completely formatted the HDD (in GPT), and installed Linux (Ubuntu, but this is not really important).

If I keep my laptop in UEFI mode it acts weirdly:

  • The laptop boots correctly into Linux, but when I shutdown, it refuses to boot again (at boot it shows a "no bootable media found" error).
  • So I booted up from a live USB, reinstalled GRUB and I can boot the computer normally -- but just ONCE!

Actually, before shutting down my computer I have to reinstall GRUB in the "fake MBR" every time! If I reinstall everything goes well... If I forget to reinstall, the computer refuses to boot.

It seems that my computer erases the fake MBR every time I boot.

Is there a solution? A workaround or similar?

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    in my bios it has two options for the boot device order: bios decided or OS decided. If yours points to OS decided, and it can't find the original OS, this could make it say no bootable media.
    – Blaine
    Commented Dec 23, 2014 at 13:56
  • In this case the OS is installed and booted the right way, in fact the os boot... just only once!
    – Aleritty
    Commented Dec 26, 2014 at 9:07
  • so, how is your bootloader setup? Grub on the MBR which points to the windows loader?
    – Blaine
    Commented Dec 27, 2014 at 10:08
  • I have removed windows completely as I described before
    – Aleritty
    Commented Dec 27, 2014 at 16:36
  • ah, ok. so what if you don't keep it "in UEFI mode"
    – Blaine
    Commented Dec 28, 2014 at 5:31

1 Answer 1

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I know you won't like this, but, firstly, I would go to the manufacturers website to see if there is any update available to the BIOS/EFI.

I have not seen this in ages, but I remember seeing it quite a bit around the time Windows 8 generation boards/laptops launched - It could be that your bootable usb stick is fully compatible but after the first boot, your machine is attempting to regenerate secure key certificates or similar and failing.... When I last saw this error, I removed Secure Boot and everything worked as expected.

If all else fails, a workaround I would do is to make a usb stick and install Grub with a default option of boot from hard drive and try to make that the default boot device and just leave it in... Not pretty, but as long as your machine supports booting from USB as the primary option, it could be a good work around.

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  • This was my first thought too... I found an update on the toshiba website, installed it (as i specified in the question) but nothing changed, neither in the UI of the BIOS nor in the functionality.
    – Aleritty
    Commented Dec 26, 2014 at 9:09

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