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Thread: I can't boot GRUB nor Windows boot manager after installation

  1. #1
    Join Date
    May 2020
    Beans
    6

    I can't boot GRUB nor Windows boot manager after installation

    So this is my first time installing a UNIX operating system so i chose lubuntu on my old computer and created a live usb, after "successfully" installing it and booting back in I could only log into Windows and looked up how to boot into lubunto changing the Boot Manager so I found this "guide" https://itsfoss.com/no-grub-windows-linux/ where it tells you how to change the boot manager and entered the following commands:

    bcdedit /set {bootmgr} path \EFI\lubuntu\grubx64.efi
    The command prompt marked the operation as successful so I restarted my PC and naturally it screwed up the boot manager and now it "can't find a boot manager or disk failed" so the same "guide" tells you to boot from a windows installation disk and after burning one and booting it from SATA0 it can't do that either it gives me the same error.

    So the only way I can boot is running the lubuntu trial version from the USB.

    Can someone please tell me how to boot from GRUB or change it back to windows?? Help would be greatly appreciated.

  2. #2
    Join Date
    Jun 2014
    Beans
    5,919

    Re: I can't boot GRUB nor Windows boot manager after installation

    You don't indicate which windows you are using? Is your windows an EFI install? Did you install Lubuntu UEFI?
    I would suggest going to the site at the link below and downloading boot repair using the 2nd option on that page while you are booted into the Lubuntu install usb. Make sure that when you run boot repair that you select ONLY the Create BootInfo Summary option and do NOT try to make any repairs. When boot repair finishes, it should give you a link which you can post here. That should give member enough useful information so they can point you in the right direction.

    https://help.ubuntu.com/community/Boot-Repair

  3. #3
    Join Date
    May 2020
    Beans
    6

    Re: I can't boot GRUB nor Windows boot manager after installation

    Thank you this is what I got

    Code:
    boot-repair-4ppa102                                              [20200507_2037]
    
    ============================== Boot Info Summary ===============================
    
     => Grub2 (v2.00) is installed in the MBR of /dev/sda and looks at sector 
        1816348800 of the same hard drive for core.img. core.img is at this 
        location and looks for (,gpt5)/boot/grub. It also embeds following 
        components:
        
        modules
        ---------------------------------------------------------------------------
        fshelp ext2 part_gpt biosdisk
        ---------------------------------------------------------------------------
     => Syslinux MBR (4.04-4.07) is installed in the MBR of /dev/sdf.
    
    sda1: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows 8/2012: NTFS
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files:        
    
    sda2: __________________________________________________________________________
    
        File system:       vfat
        Boot sector type:  Windows 8/2012: FAT32
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files:        /efi/Boot/bootx64.efi /efi/HP/SystemDiags/CryptRSA.efi 
                           /efi/HP/SystemDiags/CryptRSA32.efi 
                           /efi/HP/SystemDiags/SystemDiags.efi 
                           /efi/HP/SystemDiags/SystemDiags32.efi 
                           /efi/HP/SystemRecovery/bootmgfw.efi 
                           /efi/Microsoft/Boot/bootmgfw.efi 
                           /efi/Microsoft/Boot/bootmgr.efi 
                           /efi/Microsoft/Boot/memtest.efi
    
    sda3: __________________________________________________________________________
    
        File system:       
        Boot sector type:  -
        Boot sector info: 
    
    sda4: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows 7/2008: NTFS
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  Windows 8
        Boot files:        /bootmgr /Boot/BCD /Windows/System32/winload.exe
    
    sda5: __________________________________________________________________________
    
        File system:       ext4
        Boot sector type:  -
        Boot sector info: 
        Operating System:  Ubuntu 19.10
        Boot files:        /boot/grub/grub.cfg /etc/fstab /etc/default/grub 
                           /boot/grub/i386-pc/core.img
    
    sda6: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows 8/2012: NTFS
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files:        
    
    sda7: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  Windows 8/2012: NTFS
        Boot sector info:  No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files:        /bootmgr /boot/bcd
    
    sdf1: __________________________________________________________________________
    
        File system:       ntfs
        Boot sector type:  SYSLINUX 4.07 2013-07-25
        Boot sector info:  Syslinux looks at sector 19528 of /dev/sdf1 for its 
                           second stage. SYSLINUX is installed in the /uui 
                           directory. No errors found in the Boot Parameter Block.
        Operating System:  
        Boot files:        /boot/grub/menu.lst
    
    
    ================================ 3 OS detected =================================
    
    OS#1:   Windows 8 on sda4
    OS#2:   Ubuntu 19.10 on sda5
    OS#3:   Windows Recovery Environment (boot) on sda7
    
    ============================ Architecture/Host Info ============================
    
    CPU architecture: 64-bit
    Live-session OS is Ubuntu 64-bit (Ubuntu 19.10, eoan, x86_64)
    
    ===================================== UEFI =====================================
    
    BIOS is EFI-compatible, but it is not setup in EFI-mode for this live-session.
    
    cb8e4284804d56f058c0e1cf111eeedd   sda2/Boot/bootx64.efi
    6488d391f74263c9da3c3d47dffa6212   sda2/HP/SystemDiags/CryptRSA.efi
    1b8c0684ede8539ccc205cf7a750eca3   sda2/HP/SystemDiags/CryptRSA32.efi
    0c2035ed413a8f352b7d315121f2d8c0   sda2/HP/SystemDiags/SystemDiags.efi
    d39ce8435f3b31816bd72676fd528de8   sda2/HP/SystemDiags/SystemDiags32.efi
    87b6d22295a16073d8d456fc574441a8   sda2/HP/SystemRecovery/bootmgfw.efi
    cb8e4284804d56f058c0e1cf111eeedd   sda2/Microsoft/Boot/bootmgfw.efi
    3df357ffd0654bb80f2a575485e6e0cc   sda2/Microsoft/Boot/bootmgr.efi
    ff6d345785671fbcea9561a3cbc47702   sda7/Boot/bootx64.efi
    2d6c4295c7b479c60687d82ae80421b7   sda7/Boot/bootx64.efi.efi
    9f1c9510b4c944decbb563a3dbe39e6d   sda7/Microsoft/Boot/cdboot.efi
    acc978f561b2b06c5cf241ce37439fa2   sda7/Microsoft/Boot/cdboot_noprompt.efi
    
    
    ============================= Drive/Partition Info =============================
    
    
    Disks info: ____________________________________________________________________
    
    sda    : GPT,    noBIOSboot,    has---ESP,     not-usb,    not-mmc, has-os,    2048 sectors * 512 bytes
    sdf    : not-GPT,    noBIOSboot,    has-noESP,     usb-disk,    not-mmc, no-os,    2048 sectors * 512 bytes
    
    Partitions info (1/3): _________________________________________________________
    
    sda1    : no-os,    32, nopakmgr,    no-docgrub,    nogrub,    nogrubinstall,    no-grubenv,    noupdategrub,    not-far
    sda2    : no-os,    32, nopakmgr,    no-docgrub,    nogrub,    nogrubinstall,    no-grubenv,    noupdategrub,    not-far
    sda4    : is-os,    32, nopakmgr,    no-docgrub,    nogrub,    nogrubinstall,    no-grubenv,    noupdategrub,    farbios
    sda6    : no-os,    32, nopakmgr,    no-docgrub,    nogrub,    nogrubinstall,    no-grubenv,    noupdategrub,    farbios
    sda7    : is-os,    32, nopakmgr,    no-docgrub,    nogrub,    nogrubinstall,    no-grubenv,    noupdategrub,    farbios
    sdf1    : no-os,    32, nopakmgr,    no-docgrub,    nogrub,    nogrubinstall,    no-grubenv,    noupdategrub,    not-far
    sda5    : is-os,    64, apt-get,    grub-pc ,    grub2,    grub-install,    grubenv-ok,    update-grub,    farbios
    
    Partitions info (2/3): _________________________________________________________
    
    sda1    : isnotESP,    part-has-no-fstab,    notbiosboot,    no-nt,    no-winload,    recovery-or-hidden,    no-bmgr,    notwinboot
    sda2    : is---ESP,    part-has-no-fstab,    notbiosboot,    no-nt,    no-winload,    no-recov-nor-hid,    no-bmgr,    notwinboot
    sda4    : isnotESP,    part-has-no-fstab,    notbiosboot,    no-nt,    haswinload,    no-recov-nor-hid,    bootmgr,    is-winboot
    sda6    : isnotESP,    part-has-no-fstab,    notbiosboot,    no-nt,    no-winload,    recovery-or-hidden,    no-bmgr,    notwinboot
    sda7    : isnotESP,    part-has-no-fstab,    notbiosboot,    no-nt,    no-winload,    recovery-or-hidden,    bootmgr,    is-winboot
    sdf1    : isnotESP,    part-has-no-fstab,    notbiosboot,    no-nt,    no-winload,    no-recov-nor-hid,    no-bmgr,    notwinboot
    sda5    : isnotESP,    fstab-without-efi,    notbiosboot,    no-nt,    no-winload,    no-recov-nor-hid,    no-bmgr,    notwinboot
    
    Partitions info (3/3): _________________________________________________________
    
    sda1    : not-sepboot,    no-boot,    part-has-no-fstab,    not-sep-usr,    no---usr,    part-has-no-fstab,    std-grub.d,    sda
    sda2    : not-sepboot,    no-boot,    part-has-no-fstab,    not-sep-usr,    no---usr,    part-has-no-fstab,    std-grub.d,    sda
    sda4    : not-sepboot,    no-boot,    part-has-no-fstab,    not-sep-usr,    no---usr,    part-has-no-fstab,    std-grub.d,    sda
    sda6    : not-sepboot,    no-boot,    part-has-no-fstab,    not-sep-usr,    no---usr,    part-has-no-fstab,    std-grub.d,    sda
    sda7    : not-sepboot,    no-boot,    part-has-no-fstab,    not-sep-usr,    no---usr,    part-has-no-fstab,    std-grub.d,    sda
    sdf1    : is-sepboot,    no-kernel,    part-has-no-fstab,    not-sep-usr,    no---usr,    part-has-no-fstab,    std-grub.d,    sdf
    sda5    : not-sepboot,    with-boot,    fstab-without-boot,    not-sep-usr,    with--usr,    fstab-without-usr,    std-grub.d,    sda
    
    fdisk -l (filtered): ___________________________________________________________
    
            Boot   Start     End Sectors  Size Id Type
    loop0p1 *          0 3283711 3283712  1.6G  0 Empty
    loop0p2      3257860 3265795    7936  3.9M ef EFI (FAT-12/16/32)
    Disk sda: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
               Start        End    Sectors   Size Type
    sda1        2048    2097151    2095104  1023M Windows recovery environment
    sda2     2097152    2834431     737280   360M EFI System
    sda3     2834432    3096575     262144   128M Microsoft reserved
    sda4     3096576 1707017618 1703921043 812.5G Microsoft basic data
    sda5  1707018240 1911816191  204797952  97.7G Linux filesystem
    sda6  1911818240 1912870911    1052672   514M Windows recovery environment
    sda7  1912870912 1953523711   40652800  19.4G Microsoft basic data
    Disk sdf: 7.27 GiB, 7803174912 bytes, 15240576 sectors
          Boot Start      End  Sectors  Size Id Type
    sdf1  *     8064 15240575 15232512  7.3G  7 HPFS/NTFS/exFAT
    Disk zram0: 1.15 GiB, 1226534912 bytes, 299447 sectors
    Disk zram1: 1.15 GiB, 1226534912 bytes, 299447 sectors
    Disk zram2: 1.15 GiB, 1226534912 bytes, 299447 sectors
    Disk zram3: 1.15 GiB, 1226534912 bytes, 299447 sectors
    
    parted -lm (filtered): _________________________________________________________
    
    sda:1000GB:scsi:512:4096:gpt:ATA WDC WD10EZEX-60Z:;
    1:1049kB:1074MB:1073MB:ntfs:Basic data partition:hidden, diag;
    2:1074MB:1451MB:377MB:fat32:EFI system partition:boot, esp;
    3:1451MB:1585MB:134MB::Microsoft reserved partition:msftres;
    4:1585MB:874GB:872GB:ntfs:Basic data partition:msftdata;
    5:874GB:979GB:105GB:ext4::;
    6:979GB:979GB:539MB:ntfs::hidden, diag;
    7:979GB:1000GB:20.8GB:ntfs:Basic data partition:hidden, msftdata;
    sdf:7803MB:scsi:512:512:msdos:Kingston DataTraveler 2.0:;
    1:4129kB:7803MB:7799MB:ntfs::boot;
    zram3:1227MB:unknown:4096:4096:loop:Unknown:;
    1:0.00B:1227MB:1227MB:linux-swap(v1)::;
    zram1:1227MB:unknown:4096:4096:loop:Unknown:;
    1:0.00B:1227MB:1227MB:linux-swap(v1)::;
    zram2:1227MB:unknown:4096:4096:loop:Unknown:;
    1:0.00B:1227MB:1227MB:linux-swap(v1)::;
    zram0:1227MB:unknown:4096:4096:loop:Unknown:;
    1:0.00B:1227MB:1227MB:linux-swap(v1)::;
    
    blkid (filtered): ______________________________________________________________
    
    NAME  FSTYPE   UUID                                 PARTUUID                             LABEL               PARTLABEL
    sda                                                                                                          
    sda1  ntfs     72E869BFE8698269                     65d6f5af-d903-4200-84a1-23e8ce1c139e Windows RE tools    Basic data partition
    sda2  vfat     64B5-5C36                            c2949a00-a361-44d0-b4f6-4f2ce551d273 SYSTEM              EFI system partition
    sda3                                                2a494061-1e73-465c-91ae-80e4cca6924b                     Microsoft reserved partition
    sda4  ntfs     244079FD4079D5D0                     8ec6ab96-c56b-4117-aaa9-98c04fd7f7dc OS                  Basic data partition
    sda5  ext4     912fa4dc-4b58-4999-a2b4-2a6b1ce6dac4 ca47f1ae-0c6c-4cf9-ab94-b1fc7d358712                     
    sda6  ntfs     24DCF0ADDCF07A7E                     18268f92-9ed3-4b42-82f9-89b0ebf37e99                     
    sda7  ntfs     7804FEC704FE8780                     3873d5cb-8737-4bea-bdb8-54a69eebc1fa Recovery Image      Basic data partition
    sdf                                                                                                          
    sdf1  ntfs     902C464B2C462C92                     c3072e18-01                          UUI                 
    zram0                                                                                                        
    zram1                                                                                                        
    zram2                                                                                                        
    zram3                                                                                                        
    
    df (filtered): _________________________________________________________________
    
           Avail Use% Mounted on
    sda1   676.4M  34% /mnt/boot-sav/sda1
    sda2   321.9M  10% /mnt/boot-sav/sda2
    sda4   273.4G  66% /mnt/boot-sav/sda4
    sda5    86.3G   5% /mnt/boot-sav/sda5
    sda6    86.4M  83% /mnt/boot-sav/sda6
    sda7   516.7M  97% /mnt/boot-sav/sda7
    sdf1     5.6G  23% /isodevice
    
    Mount options: __________________________________________________________________
    
    sda1   rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
    sda2   rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
    sda4   ro,relatime,user_id=0,group_id=0,allow_other,blksize=4096
    sda5   rw,relatime
    sda6   rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
    sda7   rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
    sdf1   rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096
    
    ====================== sda5/boot/grub/grub.cfg (filtered) ======================
    
    Ubuntu
    Ubuntu, with Linux 5.3.0-18-generic
    Windows 8 (on /dev/sda4)
    Windows Recovery Environment (on /dev/sda7)
    ### END /etc/grub.d/30_os-prober ###
    ### END /etc/grub.d/30_uefi-firmware ###
    
    ========================== sda5/etc/fstab (filtered) ===========================
    
    # <file system>             <mount point>  <type>  <options>  <dump>  <pass>
    UUID=912fa4dc-4b58-4999-a2b4-2a6b1ce6dac4 /              ext4    defaults   0 1
    
    ======================= sda5/etc/default/grub (filtered) =======================
    
    GRUB_DEFAULT=1
    GRUB_TIMEOUT_STYLE=hidden
    GRUB_TIMEOUT=0
    GRUB_DISTRIBUTOR='Ubuntu'
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    GRUB_CMDLINE_LINUX=""
    #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"
    #GRUB_TERMINAL=console
    #GRUB_GFXMODE=640x480
    #GRUB_DISABLE_LINUX_UUID=true
    #GRUB_DISABLE_RECOVERY="true"
    #GRUB_INIT_TUNE="480 440 1"
    
    ==================== sda5: Location of files loaded by Grub ====================
    
               GiB - GB             File                                 Fragment(s)
    
     899.343143463 = 965.662347264  boot/grub/grub.cfg                             3
     866.102622986 = 929.970610176  boot/grub/i386-pc/core.img                     1
     904.180660248 = 970.856591360  boot/vmlinuz                                   2
     904.180660248 = 970.856591360  boot/vmlinuz-5.3.0-18-generic                  2
     904.180660248 = 970.856591360  boot/vmlinuz.old                               2
     904.293853760 = 970.978131968  boot/initrd.img                                2
     904.293853760 = 970.978131968  boot/initrd.img-5.3.0-18-generic               2
     904.293853760 = 970.978131968  boot/initrd.img.old                            2
    
    ====================== sdf1/boot/grub/menu.lst (filtered) ======================
    
    # This Menu created with Universal USB Installer https://www.pendrivelinux.com
    default 0
    timeout 30
    color NORMAL HIGHLIGHT HELPTEXT HEADING
    foreground=FFFFFF
    background=000000
    title Boot lubuntu-19.10-desktop-amd64
    set ISO=/lubuntu-19.10-desktop-amd64.iso
    set CASPER=/casper-rw
    find --set-root %ISO%
    map %ISO% (0xff)
    #CLUG
    map --hook
    root (0xff)
    kernel /casper/vmlinuz file=/preseed/lubuntu.seed noprompt boot=casper iso-scan/filename=%ISO% quiet --
    initrd /casper/initrd
    title Boot lubuntu-19.10-desktop-amd64 acpi=off
    set ISO=/lubuntu-19.10-desktop-amd64.iso
    set CASPER=/casper-rw
    find --set-root %ISO%
    map %ISO% (0xff)
    #CLUG
    map --hook
    root (0xff)
    kernel /casper/vmlinuz file=/preseed/lubuntu.seed noprompt boot=casper iso-scan/filename=%ISO% quiet acpi=off --
    initrd /casper/initrd
    
    ==================== sdf1: Location of files loaded by Grub ====================
    
               GiB - GB             File                                 Fragment(s)
    
                ?? = ??             boot/grub/menu.lst                             1
                ?? = ??             vmlinuz                                        1
                ?? = ??             initrd                                         1
    
    
    ========= Devices which don't seem to have a corresponding hard drive ==========
    
    sdb sdc sdd sde 
    
    
    =============================== StdErr Messages ================================
    
      /dev/sdb: open failed: No medium found
      /dev/sdc: open failed: No medium found
      /dev/sdd: open failed: No medium found
      /dev/sde: open failed: No medium found
    
    Suggested repair: ______________________________________________________________
    
    The default repair of the Boot-Repair utility would purge (in order to fix packages) and reinstall the grub-efi-amd64-signed of
    sda5,
    using the following options:        sda2/boot/efi,
    Additional repair would be performed: unhide-bootmenu-10s  use-standard-efi-file    
    
    Blockers in case of suggested repair: __________________________________________
    
    The current session is in Legacy mode. Please reboot the computer, and use this software in an EFI session. This will enable this feature. 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. 
    
    Advice in case of suggested repair: ____________________________________________
    
    The boot of your PC is in Legacy mode. You may want to retry after changing it to EFI mode.
    Do you want to continue?
    
    Final advice in case of suggested repair: ______________________________________
    
    Please do not forget to make your BIOS boot on sda2/efi/****/shim****.efi (**** will be updated in the final message) file!
    
    If your computer reboots directly into Windows, try to change the boot order in your BIOS.
    If your BIOS does not allow to change the boot order, change the default boot entry of the Windows bootloader.
    For example you can boot into Windows, then type the following command in an admin command prompt:
    bcdedit /set {bootmgr} path \EFI\****\shim****.efi (**** will be updated in the final message)
    
    The boot of your PC is in Legacy mode. You may want to retry after changing it to EFI mode.
    Last edited by oldfred; May 7th, 2020 at 11:37 PM. Reason: please use code tags for long terminal output # icon in Advanced Editor

  4. #4
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: I can't boot GRUB nor Windows boot manager after installation

    Please use code tags if longer output from terminal or text.
    Easy to add with Forum's advanced editor & # icon.

    Even better with Boot-Repair, just post the link it provides.

    Windows is in UEFI boot mode.
    But you installed Ubuntu in BIOS boot mode, you need to convert to UEFI boot mode and can easily do that by rebooting Ubuntu installer in UEFI boot mode and running Boot-Repair to reinstall grub or the UEFI version of grub.

    With UEFI, you should always be able to directly boot Windows from UEFI boot menu. Same set of keys to boot live installer flash drive. And since grub only boots working Windows and Windows turns fast start up back on with some updates, you will sometimes have to directly boot Windows to turn fast start up back off.

    Make sure fast start up is off in Windows.
    Fast Start up off (always on hibernation), note that Windows turns this back on with updates, SHIFT + Shut down button
    http://ubuntuforums.org/showthread.p...2#post13488472
    http://www.tenforums.com/tutorials/4...dows-10-a.html
    http://www.tenforums.com/tutorials/2...dows-10-a.html
    https://www.windowscentral.com/how-d...0-fast-startup


    HP is not always the easiest to UEFI dual boot. Some have said that if you update HP's UEFI from HP it works better.
    And you often have to use HP's UEFI to change boot order as it keeps resetting any changes using efibootmgr. Grub uses efibootmgr to change boot order & Ubuntu may boot once.
    Some old HP have to set the fallback or hard drive entry to boot Ubuntu as "ubuntu" entry just is not allowed.
    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.

  5. #5
    Join Date
    May 2020
    Beans
    6

    Re: I can't boot GRUB nor Windows boot manager after installation


    >you need to convert to UEFI boot mode and can easily do that by rebooting Ubuntu installer in UEFI boot mode

    I can only boot from the USB from the legacy options

    https://imgur.com/a/6HNGb5f


    >you should always be able to directly boot Windows from UEFI boot menu

    As I said I can't do that anymore since I edited the bootmanager value with

    bcdedit /set {bootmgr} path \EFI\lubuntu\grubx64.efi



  6. #6
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: I can't boot GRUB nor Windows boot manager after installation

    I do not know Windows, but thought that was just another entry in Windows BCD.

    Can you not boot Windows and press f8 before it starts booting to get into its repair console.
    Otherwise you have to use the Windows repair flash drive that it tells you to first make when booting Windows.
    You can make that from any other Windows system of same 64 bit configuration if required, or download ISO and make new installer to use its repair.

    It says USB hard drive is a boot option in UEFI choices?
    Last edited by oldfred; May 8th, 2020 at 03:35 AM.
    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.

  7. #7
    Join Date
    May 2020
    Beans
    6

    Re: I can't boot GRUB nor Windows boot manager after installation

    Thank you I managed to start windows through different means and now it does boot to windows. now my problem is to correctly set GRUB as the boot manager and be able to choose Windows and Lubuntu from it...

  8. #8
    Join Date
    Jun 2014
    Beans
    5,919

    Re: I can't boot GRUB nor Windows boot manager after installation

    Did you try the option suggested by oldfred to select USB hard drive is a boot option in UEFI? You need to boot in UEFI mode to do an EFI install of Grub. A legacy install of Lubuntu with Grub will not boot a windows EFI install. This is explained in the Ubuntu documentation at the link below.

    https://help.ubuntu.com/community/UEFI

  9. #9
    Join Date
    Jun 2009
    Location
    SW Forida
    Beans
    Hidden!
    Distro
    Ubuntu

    Re: I can't boot GRUB nor Windows boot manager after installation

    You need to boot Ubuntu installer in UEFI mode.
    Add Boot-Repair and reinstall grub's UEFI version.

    HP ubuntu entry may work once as grub uses efibootmgr to set boot order, but HP often resets it. Many with HP have said they could update UEFI and still then only change boot order using HP's UEFI settings. Some others have used rEFInd as boot manager or just always choose boot in UEFI menu.
    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.

  10. #10
    Join Date
    May 2020
    Beans
    6

    Re: I can't boot GRUB nor Windows boot manager after installation

    I updated the BIOS from 8.1 to v 8.19(2014) and still won't let me boot the USB from UEFI mode, only Legacy Mode as in the image https://imgur.com/a/6HNGb5f what are my options?

    Is there a way to perform boot repair from Windows? as it is the only way I can boot UEFI mode

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