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Thread: Boot Help Please!

  1. #1
    Join Date
    Jun 2011
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    13

    Boot Help Please!

    No boot device found when trying to boot. I was getting the grub> prompt, but then I tried "Boot Repair" and now nothing. Boot Repair had me issue the following commands.:

    Code:
    sudo chroot "/mnt/boot-sav/sda2" dpkg --configure -a
    sudo chroot "/mnt/boot-sav/sda2" apt-get install -fy
    sudo chroot "/mnt/boot-sav/sda2" apt-get purge -y --force-yes grub*-common shim*
    sudo chroot "/mnt/boot-sav/sda2" apt-get install -y --force-yes grub-efi

    When done, it repsonded with:
    Boot successfully repaired.

    Please write on a paper the following URL:
    http://paste.ubuntu.com/5621586/
    Now I can't even get the grub prompt! I can get into my ubuntu drive from a live CD and the files look ok.

    One thing I noticed when doing the Boot Repair was this terminal message:
    Creating config file /etc/default/grub with new version
    Fatal: Couldn't open either sysfs or procfs directories for accessing EFI variables.
    Try 'modprobe efivars' as root.
    Fatal: Couldn't open either sysfs or procfs directories for accessing EFI variables.
    Try 'modprobe efivars' as root.
    Installation finished. No error reported.
    Setting up grub-efi (1.99-21ubuntu3.9) ...
    Please help! What should I try next? I'm a newbie so please be explicit! Thank you!
    Last edited by Tony T; March 19th, 2013 at 07:27 PM. Reason: fixed fonts, added code tags

  2. #2
    Join Date
    Jun 2011
    Beans
    13

    Re: Boot Help Please!

    Bump. . . any ideas or maybe direct me to some other forum that may help. Pretty Please!

  3. #3
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Boot Help Please!

    It seems like Boot-Repair was converting a BIOS install to UEFI install.

    Is this a Windows 8 system with secure boot.

    Have you turned off secure boot, fast boot and are you booting from UEFI and choosing ubuntu?

    Is this the procedures you followed?

    You will need to use the 64 bit version of 12.10 or 12.04.2 and from the UEFI menu boot the flash drive in UEFI mode. That way it will install in UEFI mode.
    Systems need quick boot or fast boot turned off in UEFI settings. Vital for some systems. Best to backup efi partition and Windows partition first.
    Use Windows Disk Tools to shrink Windows main partition, but not to create any new partitions, if installing on same drive.
    https://help.ubuntu.com/community/UEFI
    https://wiki.archlinux.org/index.php/UEFI
    As of 12.04.2, it is possible to install on UEFI systems with Secure Boot enabled (using signed versions of Shim, GRUB, and the Linux kernel). This is only currently set up for Ubuntu (desktop, alternate, and server) and Edubuntu images due to pressures of time; we expect to enable it across the entire Ubuntu family for 12.04.3. Details:
    https://wiki.ubuntu.com/PrecisePango.../UbuntuDesktop
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  4. #4
    Join Date
    Jun 2011
    Beans
    13

    Re: Boot Help Please!

    Thank you very much oldfred!

    Quote Originally Posted by oldfred View Post
    It seems like Boot-Repair was converting a BIOS install to UEFI install.

    Is this a Windows 8 system with secure boot.
    No, this is a single drive system with ubuntu 12.04.2 LTS only. No Windows! I don't understand why Boot-Repair was converting a BIOS install to UEFI install?

    Have you turned off secure boot, fast boot and are you booting from UEFI and choosing ubuntu?
    Yes, but it was working fine before with fast boot.

    Is this the procedures you followed?

    You will need to use the 64 b 64 bit version of 12.10 or 12.04.2it version of 12.10 or 12.04.2 and from the UEFI menu boot the flash drive in UEFI mode. That way it will install in UEFI mode.
    Systems need quick boot or fast boot turned off in UEFI settings. Vital for some systems. Best to backup efi partition and Windows partition first.
    Use Windows Disk Tools to shrink Windows main partition, but not to create any new partitions, if installing on same drive.
    https://help.ubuntu.com/community/UEFI
    https://wiki.archlinux.org/index.php/UEFI
    As of 12.04.2, it is possible to install on UEFI systems with Secure Boot enabled (using signed versions of Shim, GRUB, and the Linux kernel). This is only currently set up for Ubuntu (desktop, alternate, and server) and Edubuntu images due to pressures of time; we expect to enable it across the entire Ubuntu family for 12.04.3. Details:
    https://wiki.ubuntu.com/PrecisePango.../UbuntuDesktop
    No, I installed the 64 bit version of 12.04.2 LTS using a flash drive but not in UEFI mode. EFI is the confusing part, there was no EFI install as far as I know. Any additional thoughts?

    Thanks,
    Tony

  5. #5
    Join Date
    Jun 2011
    Beans
    13

    Re: Boot Help Please!

    UPDATE:

    EFI is the confusing part, there was no EFI install as far as I know. Any additional thoughts?
    Correction: My motherboard is using UEFI, howerver, installing Ubuntu dosen't give me a UEFI option, it is automatic. Should I just try a grube2 MBR install?

  6. #6
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Boot Help Please!

    You should be able to go into UEFI menu and choose to boot ubuntu. It may still be set in another default boot mode.

    It installs in the mode you boot installer flash drive. The UEFI/BIOS menu should show two options, one UEFI and the other BIOS/Legacy/CSM or whatever. Then it installs in that mode.

    If only Ubuntu you can have gpt partitioning with BIOS boot but have to have the bios_grub partition. With UEFI boot you have to have the efi partition.

    Both Windows & Ubuntu use the same efi partition and you still show the Windows boot files in the efi partition, so that is why Boot-Repair is trying to include those in grub's menu.

    Have you turned secure boot off & fast boot off. A few systems only let you turn fast boot off from Windows boot menu and if you do not turn it off there, you brick system as if Windows does not boot you cannot get into UEFI menu to even boot a Windows repair.

    Windows only boots from gpt partitioning with UEFI or with UEFI only can have gpt partitioning.
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  7. #7
    Join Date
    Jun 2011
    Beans
    13

    Re: Boot Help Please!

    Thanks oldfred, I trired many things such as trying to manually install grub2 with these commands:

    sudo mkdir -p /dev/sda1 /mnt/boot/efi
    sudo mount /dev/sda1 /mnt/boot/efi #sda1 is my efi partition
    sudo mount -t vfat -o rw,users /dev/sda1 /mnt/boot/efi
    sudo mkdir -p /mnt/boot/efi/grub
    cd /home/ubuntu/Downloads/grub-2.00/grub-core
    sudo cp grub.efi *.mod *.lst /mnt/boot/efi/grub
    sudo touch /mnt/boot/efi/grub/grub.cfg
    ../grub-probe --target=device /boot/efi/grub/grub.efi
    But in the end nothing seemed to fix it. I had access to all my files, so I just copied my home directory and reinstalled ubuntu 12.04.

    I'm convinced the problem had to do with the bios UEFI boot as you suggested, however, I couldn't solve it. So anyway thanks again for all your help, I'm up and running on a new ubuntu install.

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