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Thread: GRUB on thumbdrive

  1. #1
    Join Date
    Nov 2012

    GRUB on thumbdrive


    i recently installed ubuntu 12.04 along with win7.
    problem is when i boot there is no GRUB to select ubuntu.
    GRUB only appears when i reboot with my thumbdrive mounted.

    can anyone pls help?

  2. #2
    Join Date
    Jun 2009
    SW Forida
    Ubuntu 16.04 Xenial Xerus

    Re: GRUB on thumbdrive

    Welcome to the forums.

    It seems like you installed grub to the USB flash drive? Grub normally defaults to install to sda's MBR. But a few computers promote flash drive to sda and then grub installs to wrong drive.

    If you can boot from flash drive into Ubuntu run this to reset install drive. Be sure to choose the hard drive, not any partitions or the flash drive again.

    #to get grub2 to remember where to reinstall on updates:
    sudo dpkg-reconfigure grub-pc
    #Enter thru first pages,spacebar to choose/unchoose drive, enter to accept, do not choose partitions

    Grub remembers where to reinstall on major updates, so you need the reconfigure to reset it, or else it may try to reinstall to flash drive later on.
    For more info on UEFI boot install & repair - Regularly Updated :
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #3
    Join Date
    Nov 2012

    Re: GRUB on thumbdrive

    thanks a lot.that helps.


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