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Thread: Cannot boot into Ubuntu

  1. #1
    Join Date
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    Cannot boot into Ubuntu

    Hello Ubuntu forum ,

    I installed Ubuntu 3 days ago, and when I boot into Ubuntu it didn't recognize Ubuntu, it gives me the error: "cannot find boot device". I have tried everything, for example: reinstall Ubuntu, and to add Ubuntu in the bios, but it wouldn't add that. So I was wondering if you could do it.

    Here are my specs:
    Intel® Core™2 Duo CPU T5750 @ 2.00GHz × 2
    4 GB of memory
    1 terabyte SSD

    Code:
    here is the pastebin:
    
    The default repair of the Boot-Repair utility would reinstall the grub-efi of
    sda3,
    using the following options:  sda2/boot/efi
    Additional repair would be performed: unhide-bootmenu-10s use-standard-efi-file
    boot-repair-4ppa2068 [20231221_1408]
    
    ============================== Boot Info Summary ===============================
    
    => Grub2 (v2.00) is installed in the MBR of /dev/sda and looks at sector 2048
    of the same hard drive for core.img. core.img is at this location and
    looks for (,gpt3)/boot/grub. It also embeds following components:
    
    modules
    ---------------------------------------------------------------------------
    fshelp ext2 part_gpt biosdisk
    ---------------------------------------------------------------------------
    => Grub2 (v2.00) is installed in the MBR of /dev/sdb and looks at sector 1 of
    the same hard drive for core.img. core.img is at this location and looks
    for (hd0,msdos1)/boot/grub. It also embeds following components:
    
    modules
    ---------------------------------------------------------------------------
    biosdisk fshelp fat exfat ext2 ntfs ntfscomp part_msdos
    ---------------------------------------------------------------------------
    
    sda1: __________________________________________________________________________
    
    File system: BIOS Boot partition
    Boot sector type: Grub2's core.img
    Boot sector info:
    
    sda2: __________________________________________________________________________
    
    File system: vfat
    Boot sector type: FAT32
    Boot sector info: No errors found in the Boot Parameter Block.
    Operating System:
    Boot files: /efi/BOOT/fbx64.efi /efi/BOOT/mmx64.efi
    /efi/ubuntu/grubx64.efi /efi/ubuntu/mmx64.efi
    /efi/ubuntu/shimx64.efi /efi/ubuntu/grub.cfg
    
    sda3: __________________________________________________________________________
    
    File system: ext4
    Boot sector type: -
    Boot sector info:
    Operating System: Ubuntu 22.04.3 LTS
    Boot files: /boot/grub/grub.cfg /etc/fstab /etc/default/grub
    /boot/grub/i386-pc/core.img
    
    sdb1: __________________________________________________________________________
    
    File system: ntfs
    Boot sector type: Windows 7/2008: NTFS
    Boot sector info: No errors found in the Boot Parameter Block.
    Operating System:
    Boot files: /boot/grub/grub.cfg
    
    
    ================================ 1 OS detected =================================
    
    OS#1: Ubuntu 22.04.3 LTS on sda3
    
    ================================ Host/Hardware =================================
    
    CPU architecture: 64-bit
    Video: G86M [GeForce 8400M GS] from NVIDIA Corporation
    Live-session OS is Ubuntu 64-bit (Ubuntu 22.04.3 LTS, jammy, x86_64)
    
    ===================================== UEFI =====================================
    
    BIOS/UEFI firmware: V1.27 from Acer
    This live-session is in Legacy/BIOS/CSM mode (not in EFI mode).
    
    
    a9c517741ac31962d7feb152948ad1ee sda2/BOOT/fbx64.efi
    a660182adef313615746a665966d2ccc sda2/BOOT/mmx64.efi
    a1da253696a304dce6b4668b70151c0e sda2/ubuntu/grubx64.efi
    a660182adef313615746a665966d2ccc sda2/ubuntu/mmx64.efi
    64349b3622c65f495a99dbf6102496e3 sda2/ubuntu/shimx64.efi
    64349b3622c65f495a99dbf6102496e3 sda2/BOOT/BOOTX64.efi
    
    ============================= Drive/Partition Info =============================
    
    Disks info: ____________________________________________________________________
    
    sda : is-GPT, hasBIOSboot, has---ESP, not-usb, not-mmc, has-os, no-wind, 2048 sectors * 512 bytes
    
    Partitions info (1/3): _________________________________________________________
    
    sda2 : no-os, 64, nopakmgr, no-docgrub, nogrub, nogrubinstall, no-grubenv, noupdategrub, not-far
    sda3 : is-os, 64, apt-get, signed grub-pc grub-efi , grub2, grub-install, grubenv-ok, update-grub, end-after-100GB
    
    Partitions info (2/3): _________________________________________________________
    
    sda2 : is---ESP, part-has-no-fstab, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
    sda3 : isnotESP, fstab-has-goodEFI, no-nt, no-winload, no-recov-nor-hid, no-bmgr, notwinboot
    
    Partitions info (3/3): _________________________________________________________
    
    sda2 : not--sepboot, no---boot, part-has-no-fstab, not-sep-usr, no---usr, part-has-no-fstab, no--grub.d, sda
    sda3 : not--sepboot, with-boot, fstab-without-boot, not-sep-usr, with--usr, fstab-without-usr, std-grub.d, sda
    
    fdisk -l (filtered): ___________________________________________________________
    
    Disk sda: 465.76 GiB, 500107862016 bytes, 976773168 sectors
    Disk identifier: 38F6E2CA-F28B-4B57-B89D-AA91656C1DC3
    Start End Sectors Size Type
    sda1 2048 4095 2048 1M BIOS boot
    sda2 4096 1054719 1050624 513M EFI System
    sda3 1054720 976771071 975716352 465.3G Linux filesystem
    Disk sdb: 57.3 GiB, 61530439680 bytes, 120176640 sectors
    Disk identifier: 0x9632f465
    Boot Start End Sectors Size Id Type
    sdb1 * 2048 120176639 120174592 57.3G 7 HPFS/NTFS/exFAT
    
    parted -lm (filtered): _________________________________________________________
    
    sda:500GB:scsi:512:512:gpt:ATA Samsung SSD 870:;
    1:1049kB:2097kB:1049kB:::bios_grub;
    2:2097kB:540MB:538MB:fat32:EFI System Partition:boot, esp;
    3:540MB:500GB:500GB:ext4::;
    sdb:61.5GB:scsi:512:512:msdos: USB SanDisk 3.2Gen1:;
    1:1049kB:61.5GB:61.5GB:ntfs::boot;
    
    blkid (filtered): ______________________________________________________________
    
    NAME FSTYPE UUID PARTUUID LABEL PARTLABEL
    sda
    ├─sda1 115c2b5c-d444-4ff8-bb03-61532842922f
    ├─sda2 vfat D10D-0C8C 18569ba1-65fe-4479-a876-909078f4369f EFI System Partition
    └─sda3 ext4 9bd304ce-8896-4c79-974a-75fead424382 81bc60d7-ab90-4130-9410-9e9e6fcef740
    sdb
    └─sdb1 ntfs 9CC0A78BC0A769EA 9632f465-01 Ubuntu 22_04_3 LTS amd64
    
    Mount points (filtered): _______________________________________________________
    
    Avail Use% Mounted on
    /dev/sda2 505.9M 1% /mnt/boot-sav/sda2
    /dev/sda3 419.9G 3% /mnt/boot-sav/sda3
    /dev/sdb1 52.5G 8% /cdrom
    
    Mount options (filtered): ______________________________________________________
    
    /dev/sda2 vfat rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
    /dev/sda3 ext4 rw,relatime
    /dev/sdb1 fuseblk rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
    
    ===================== sda2/efi/ubuntu/grub.cfg (filtered) ======================
    
    search.fs_uuid 9bd304ce-8896-4c79-974a-75fead424382 root hd0,gpt3
    set prefix=($root)'/boot/grub'
    configfile $prefix/grub.cfg
    
    ====================== sda3/boot/grub/grub.cfg (filtered) ======================
    
    Ubuntu 9bd304ce-8896-4c79-974a-75fead424382
    ### END /etc/grub.d/30_os-prober ###
    ### END /etc/grub.d/30_uefi-firmware ###
    
    ========================== sda3/etc/fstab (filtered) ===========================
    
    # <file system> <mount point> <type> <options> <dump> <pass>
    # / was on /dev/sda3 during installation
    UUID=9bd304ce-8896-4c79-974a-75fead424382 / ext4 errors=remount-ro 0 1
    # /boot/efi was on /dev/sda2 during installation
    UUID=D10D-0C8C /boot/efi vfat umask=0077 0 1
    /swapfile none swap sw 0 0
    
    ======================= sda3/etc/default/grub (filtered) =======================
    
    GRUB_DEFAULT=0
    GRUB_TIMEOUT_STYLE=hidden
    GRUB_TIMEOUT=0
    GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    GRUB_CMDLINE_LINUX=""
    
    ==================== sda3: Location of files loaded by Grub ====================
    
    GiB - GB File Fragment(s)
    243.175739288 = 261.107961856 boot/grub/grub.cfg 1
    222.866970062 = 239.301586944 boot/grub/i386-pc/core.img 1
    384.664215088 = 413.030055936 boot/vmlinuz 2
    221.297000885 = 237.615845376 boot/vmlinuz-6.2.0-26-generic 1
    384.664215088 = 413.030055936 boot/vmlinuz-6.2.0-39-generic 2
    221.297000885 = 237.615845376 boot/vmlinuz.old 1
    243.143550873 = 261.073399808 boot/initrd.img 4
    196.785068512 = 211.296358400 boot/initrd.img-6.2.0-26-generic 1
    243.143550873 = 261.073399808 boot/initrd.img-6.2.0-39-generic 4
    196.785068512 = 211.296358400 boot/initrd.img.old 1
    
    ===================== sda3: ls -l /etc/grub.d/ (filtered) ======================
    
    -rwxr-xr-x 1 root root 18683 Dec 18 2022 10_linux
    -rwxr-xr-x 1 root root 43031 Dec 18 2022 10_linux_zfs
    -rwxr-xr-x 1 root root 14387 Dec 18 2022 20_linux_xen
    -rwxr-xr-x 1 root root 13369 Dec 18 2022 30_os-prober
    -rwxr-xr-x 1 root root 1372 Dec 18 2022 30_uefi-firmware
    -rwxr-xr-x 1 root root 700 May 17 2023 35_fwupd
    -rwxr-xr-x 1 root root 214 Dec 18 2022 40_custom
    -rwxr-xr-x 1 root root 215 Dec 18 2022 41_custom
    
    ====================== sdb1/boot/grub/grub.cfg (filtered) ======================
    
    Try or Install Ubuntu
    Ubuntu (safe graphics)
    OEM install (for manufacturers)
    Boot from next volume
    UEFI Firmware Settings
    Test memory
    
    ==================== sdb1: Location of files loaded by Grub ====================
    
    GiB - GB File Fragment(s)
    ?? = ?? boot/grub/grub.cfg 1
    
    
    Suggested repair: ______________________________________________________________
     Blockers in case of suggested repair: __________________________________________
    
     The current session is in BIOS-compatibility mode. Please disable BIOS-compatibility/CSM/Legacy mode in your UEFI firmware, and use this software from a live-CD (or live-USB) that is compatible with UEFI booting mode. For example, use a live-USB of Boot-Repair-Disk-64bit (www.sourceforge.net/p/boot-repair-cd), after making sure your BIOS is set up to boot USB in EFI mode. This will enable this feature.
    
    Final advice in case of suggested repair: ______________________________________
    
    Please do not forget to make your UEFI firmware boot on the Ubuntu 22.04.3 LTS entry (sda2/efi/****/grub****.efi (**** will be updated in the final message) file) !
    The boot of your PC is in BIOS-compatibility/CSM/Legacy mode. You may want to retry after changing it to UEFI mode.
    Last edited by thevgamer; December 21st, 2023 at 06:24 PM. Reason: Code Tags

  2. #2
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    Re: Cannot boot into Ubuntu

    You did one install of Ubuntu in Legacy mode which is why you have a BIOS_boot partition (sda1) and another install in EFI mode with the EFI partition (sda2) with the Ubuntu boot files needed for an EFI boot. The boot repair output shows you were booting in Legacy mode. Boot in EFI mode from your BIOS, the sda drive set to first boot in the boot priority. If you booted the installer in EFI mode, it should have installed boot files to the EFI partition which it appears to have done and it should also have created an entry in the BIOS firmware. If it did not do that, something else went wrong so you might try the suggestion in boot repair. You do need to boot the boot repair in EFI mode which you did not.

  3. #3
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    Re: Cannot boot into Ubuntu

    Hey yancek,

    I couldn't find the efi mode in my bios. I also looked up on the internet, but unfortunately no luck. But where can you find the efi mode?

  4. #4
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    Re: Cannot boot into Ubuntu

    The Boot Repair Disk booted as UEFI (on it's own), but the Installer LiveUSB installed as BIOS Legacy...

    As this is a brand new install... Recreate the Installer LiveUSB in Rufus > GPT, UEFI "only".

    Boot the installer LiveUSB. Use "Try". Open a terminal:
    Code:
    [ -d /sys/firmware/efi ] && echo "UEFI Firmware mode" || echo "Legacy mode (alias CSM alias BIOS mode)"
    Ensure it says it booted as "UEFI Firmware mode"

    Start the installer and reinstall.

    That is going to be the easiest and fastest way to correct all of that with nothing left that may be confused.

    "Concurrent coexistence of Windows, Linux and UNIX..." || Ubuntu user # 33563, Linux user # 533637
    Sticky: Graphics Resolution | UbuntuForums 'system-info' Script | Posting Guidelines | Code Tags

  5. #5
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    Re: Cannot boot into Ubuntu

    Core2 Duo I thought were BIOS only. Not sure how you booted to get the ESP - efi system paratition for UEFI boot?
    Your fstab even shows the normal mount of the ESP which is only from an UEFI install.

    Google says that model Acer has 2.4GHz Intel Core i5-2430M Dual-Core which is UEFI.
    I do not think Linux still has a nVidia driver for the 8400gs, but Intel video on that chip is better anyway.
    https://www.videocardbenchmark.net/c...-Intel-HD-3000

    Acer has required "trust" is UEFI settings to allow boot of Ubuntu.
    Acer Aspire ES1-512-C39M Details on supervisor password and settings to enable trust on ubuntu entries Also R14 model same fix
    http://ubuntuforums.org/showthread.p...4#post13203044 &
    http://ubuntuforums.org/showthread.php?t=2290594

    You may need newer UEFI/BIOS.
    Most let you download a file into a FAT32 partition which UEFI can read directly. If only an .exe that is a Windows file.
    You may be able to extract the update from the .exe or use Freedos bootable flash drive to run the .exe file.
    UEFI boot install & repair info - Regularly Updated :
    https://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  6. #6
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    Re: Cannot boot into Ubuntu

    @oldfred --
    NVidia G86M [GeForce 8400M GS] will work with driver package nvidia-340. It's legacy, but is still in the repo's.

    "Concurrent coexistence of Windows, Linux and UNIX..." || Ubuntu user # 33563, Linux user # 533637
    Sticky: Graphics Resolution | UbuntuForums 'system-info' Script | Posting Guidelines | Code Tags

  7. #7
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    Re: Cannot boot into Ubuntu

    Hey MAFoElffen,

    I've installed the ubuntu installer in GPT, but now the usb won't boot anymore. The bios can detect the USB but it cannot open it anymore.
    Last edited by thevgamer; December 22nd, 2023 at 03:39 PM.

  8. #8
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    Re: Cannot boot into Ubuntu

    Hey Oldfred,

    I've tried to set a supervision passwaord, and once I have done it, the menu secure boot and select a uefi file menu didn't pop up. Do I perhaps have to update my bios? My bios version is 1.27.
    Last edited by thevgamer; December 22nd, 2023 at 02:38 PM.

  9. #9
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    Re: Cannot boot into Ubuntu

    Every system should have latest firmware whether Linux or Windows.
    There have been various virus that need both UEFI & kernel updates. So current is best for security.

    Now older thread, but may apply to your system. Some had posted they had to downgrade UEFI firmware to get it to work. Then another update fixed issue & users posted that newest UEFI firmware worked.
    Acer Very latest UEFI/BIOS works, downgrade not required if no trust screens, you must now upgrade:
    http://ubuntuforums.org/showthread.p...1#post13419141
    Aspire E15 will not dual boot, many details Trust settings in step 35
    http://askubuntu.com/questions/62741...-not-dual-boot

    Issues often common across models by vendor. Older Acer threads. Newer version of Ubuntu should be better.
    [SOLVED]Acer Nitro 5 (with Ryzen 7 2700U, RX 560X) Ubuntu 18.10
    https://ubuntuforums.org/showthread.php?t=2413504 &
    https://ubuntuforums.org/showthread.php?t=2412117 &
    https://community.acer.com/en/discus...nitro-an512-42
    UEFI boot install & repair info - Regularly Updated :
    https://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  10. #10
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    Re: Cannot boot into Ubuntu

    Quote Originally Posted by oldfred View Post
    Every system should have latest firmware whether Linux or Windows.
    There have been various virus that need both UEFI & kernel updates. So current is best for security.

    Now older thread, but may apply to your system. Some had posted they had to downgrade UEFI firmware to get it to work. Then another update fixed issue & users posted that newest UEFI firmware worked.
    Acer Very latest UEFI/BIOS works, downgrade not required if no trust screens, you must now upgrade:
    http://ubuntuforums.org/showthread.p...1#post13419141
    Aspire E15 will not dual boot, many details Trust settings in step 35
    http://askubuntu.com/questions/62741...-not-dual-boot

    Issues often common across models by vendor. Older Acer threads. Newer version of Ubuntu should be better.
    [SOLVED]Acer Nitro 5 (with Ryzen 7 2700U, RX 560X) Ubuntu 18.10
    https://ubuntuforums.org/showthread.php?t=2413504 &
    https://ubuntuforums.org/showthread.php?t=2412117 &
    https://community.acer.com/en/discus...nitro-an512-42
    Ok I have read the showthreads, but I still can't see it. Here are some of my screenshots of my bios:
    Attached Images Attached Images

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