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Toshiba Satellite C55-A5104 (and possibly other C55 and C55t models) with a graphical INSYDE UEFI BIOS are missing the “Boot Mode” option under Advanced->System Configuration that allows switching from UEFI to CSM boot. There is an entire Toshiba forum thread full of disgruntled people talking about it.

The solution is simple: BIOS version 1.10 doesn’t have the option, but updating the BIOS to 1.30 adds it. Here’s a direct link.

Leave thanks in the comments. 🙂

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4 Comments

  1. How are you suppose to load it if you can access any drives becuase it is in UEFI?

    • Do it from Windows. You need Windows installed long enough to flash the BIOS.

    • How do we update the Bios on a Toshiba satellite5 C55-A5180 with a Bios 1.10 installed. Finally figured out how to see Bios settings and moved ODD to the top of the list. Can not get the laptop to boot from the Bios 1.5 CD that was burned on another computer. Please email exact instructions on how to boot from the CD/DVD. Thanks

        • nctritech
        • Posted July 2, 2016 at 8:32 am
        • Permalink

        You will need to contact Toshiba.


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