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Thread: No bootable devices found

  1. #11
    Join Date
    Dec 2016
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    Re: No bootable devices found

    Thanks a lot for your help. When I have time later today I'll run through that and if it fails run the dell factory reset disk. When I install grub can I do that straight from the liveusb or will I have mount and chroot to the hard disk before?

  2. #12
    Join Date
    Jun 2009
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    SW Forida
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    Ubuntu

    Re: No bootable devices found

    I had an emergency boot flash drive, actually several.
    One was rEFInd and others are full installs of Ubuntu with grub configured to allow me to easily specify boot if not in menu.
    I believe Boot-Repair has you walk thru a mini-chroot that works to reinstall grub.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #13
    Join Date
    Dec 2016
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    9

    Re: No bootable devices found

    Hi thanks for your help. I've followed your advice, deleted the old partition and created a new one with the correct flags. I'm now at the stage of updating grub, and I'm getting the error
    /usr/sbin/grub-probe: error: failed to get canonical path of `/cow'. I could try just running boot repair at this point?

  4. #14
    Join Date
    Dec 2016
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    9

    Re: No bootable devices found

    Got round this stage by mounting the efi partition and running sudo grub-install --recheck --root-directory=/mnt /dev/sda.
    sudo efibootmgr -v gives me this output. I switched back to legacy mode because I was trying to get the dell recovery disk to work, but this output looks okay to me
    BootCurrent: 0007
    Timeout: 0 seconds
    BootOrder: 0000,0001,0002,0006,0004,0005,0007
    Boot0000* ubuntu HD(1,GPT,da32080b-2d45-461d-8215-dca560e3199e,0x800,0x100000)/File(\EFI\ubuntu\shimx64.efi)
    Boot0001* Diskette Drive BBS(Floppy,Diskette Drive,0x0)AMBO
    Boot0002* Internal HDD BBS(HD,P0: ST500LM000-1EJ162 ,0x0)AMBO
    Boot0004* CD/DVD/CD-RW Drive BBS(CDROM,CD/DVD/CD-RW Drive,0x0)AMBO
    Boot0005* Onboard NIC BBS(Network,IBA GE Slot 00C8 v1538,0x0)AMBO
    Boot0006* USB Storage Device BBS(USB,Generic Flash Disk 5.00,0x0)AMBO
    Boot0007* UEFI: Generic Flash Disk 5.00 PciRoot(0x0)/Pci(0x1d,0x0)/USB(1,0)/USB(1,0)/HD(1,MBR,0x663eb4c4,0x3906b4,0x1240)AMBO

  5. #15
    Join Date
    Dec 2016
    Beans
    9

    Re: No bootable devices found

    I've rebooted and progress has finally been made. I set the system to UEFI secure boot on and it gives me two options from the BIOS
    ubuntu
    UEFI: STS00LM000-1EJ162.
    Selecting either of these now leads straight to grub. Should I be able to fix this with a reinstall?

    edit: boot-repair now gives me this output and seems to have fixed things. Thanks a lot oldfred for your expertise. There'd have been no hope for me by myself http://paste.ubuntu.com/p/2R9JmkZ6v9/
    Last edited by freddie-breese; 5 Days Ago at 06:58 PM.

  6. #16
    Join Date
    Jun 2009
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    SW Forida
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    Ubuntu

    Re: No bootable devices found

    Glad that worked.
    Boot-Repair probably also fixed fstab with correct UUID (or really the full reinstall of grub).

    You can change to solved in case others have same issue and search forum.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

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