Dual Booting Ubuntu, can't load Windows 10












0















I know there are alot of previous questions on this topic, but I've tried alot of the solutions and nothing has been working.
I ran boot-repair on ubuntu and here is the pastebin link it gives: http://paste.ubuntu.com/p/VKwZsFmv7n/



Before running boot-repair, I could see on GRUB: Ubuntu, advanced options for Ubuntu, and Windows startup manager. Loading Ubuntu works fine, but trying to load into Windows 10 brought up a continuous loop of a screen "Could not startup Windows" with options to restart or go to advanced options. Eventually I decided to perform a factory reset through the advanced options, but Windows 10 still could not be booted into.



After running boot-repair, the GRUB menu has many more items with titles like "...windows..efi". Starting into some of them brings up a black screen with text: "no image found", and others bring me to a screen that lets me factory reset once again, or attempt to repair boot (I've tried both of these many times, no solution found yet).



Desperate for any help now into being able to boot into Windows 10 again, thanks in advance for any help.



Edit: sudo parted -l gives



Model: NVMe Device (nvme)
Disk /dev/nvme0n1: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 683MB 682MB fat32 EFI system partition boot, esp
2 683MB 817MB 134MB Microsoft reserved partition msftres
3 817MB 220GB 219GB ntfs Basic data partition msftdata
7 220GB 241GB 21.0GB ext4
4 241GB 242GB 1038MB ntfs hidden, diag
5 242GB 255GB 13.3GB ntfs hidden, diag
6 255GB 256GB 1152MB ntfs hidden, diag


and grep -A10 -i 'Windows' /boot/grub/grub.cfg gives



menuentry "Windows UEFI bootmgfw.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi
}

menuentry "Windows Boot UEFI loader" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Boot/bkpbootx64.efi
}

menuentry "Windows Boot UEFI fbx64.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Boot/fbx64.efi
}

menuentry "EFI/ubuntu/fwupx64.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/ubuntu/fwupx64.efi
}

menuentry "EFI/ubuntu/mmx64.efi" {
--
menuentry 'Windows Boot Manager (on /dev/nvme0n1p1)' --class windows --class os $menuentry_id_option 'osprober-efi-D85B-0CB1' {
insmod part_gpt
insmod fat
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root D85B-0CB1
else
search --no-floppy --fs-uuid --set=root D85B-0CB1
fi
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}
set timeout_style=menu









share|improve this question

























  • Need ro see output for sudo parted -l and for grep -A10 -i 'Windows' /boot/grub/grub.cfg.

    – Paul Benson
    Feb 4 at 0:43











  • did you happen to change SATA mode in the BIOS, from RAID (or Intel RST) to AHCI...? If so, that could cause the problem you describe.

    – TonyB
    Feb 4 at 0:47











  • @PaulBenson added outputs to post

    – blastpower5
    Feb 4 at 0:58











  • @TonyB actually yes I did, i think that was to fix an issue during installing ubuntu from USB stick where it would not recognize my hard drive, i will change it back to RAID and see if it fixes anything

    – blastpower5
    Feb 4 at 0:59











  • Does your PC happen to have Intel Rapid Storage Technology installed on it? Perhaps Optane memory? I helped a friend install a dual boot on a system like that and there are specific steps you have to take to enable a dual boot environment... this link describes the steps.

    – TonyB
    Feb 4 at 1:04


















0















I know there are alot of previous questions on this topic, but I've tried alot of the solutions and nothing has been working.
I ran boot-repair on ubuntu and here is the pastebin link it gives: http://paste.ubuntu.com/p/VKwZsFmv7n/



Before running boot-repair, I could see on GRUB: Ubuntu, advanced options for Ubuntu, and Windows startup manager. Loading Ubuntu works fine, but trying to load into Windows 10 brought up a continuous loop of a screen "Could not startup Windows" with options to restart or go to advanced options. Eventually I decided to perform a factory reset through the advanced options, but Windows 10 still could not be booted into.



After running boot-repair, the GRUB menu has many more items with titles like "...windows..efi". Starting into some of them brings up a black screen with text: "no image found", and others bring me to a screen that lets me factory reset once again, or attempt to repair boot (I've tried both of these many times, no solution found yet).



Desperate for any help now into being able to boot into Windows 10 again, thanks in advance for any help.



Edit: sudo parted -l gives



Model: NVMe Device (nvme)
Disk /dev/nvme0n1: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 683MB 682MB fat32 EFI system partition boot, esp
2 683MB 817MB 134MB Microsoft reserved partition msftres
3 817MB 220GB 219GB ntfs Basic data partition msftdata
7 220GB 241GB 21.0GB ext4
4 241GB 242GB 1038MB ntfs hidden, diag
5 242GB 255GB 13.3GB ntfs hidden, diag
6 255GB 256GB 1152MB ntfs hidden, diag


and grep -A10 -i 'Windows' /boot/grub/grub.cfg gives



menuentry "Windows UEFI bootmgfw.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi
}

menuentry "Windows Boot UEFI loader" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Boot/bkpbootx64.efi
}

menuentry "Windows Boot UEFI fbx64.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Boot/fbx64.efi
}

menuentry "EFI/ubuntu/fwupx64.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/ubuntu/fwupx64.efi
}

menuentry "EFI/ubuntu/mmx64.efi" {
--
menuentry 'Windows Boot Manager (on /dev/nvme0n1p1)' --class windows --class os $menuentry_id_option 'osprober-efi-D85B-0CB1' {
insmod part_gpt
insmod fat
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root D85B-0CB1
else
search --no-floppy --fs-uuid --set=root D85B-0CB1
fi
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}
set timeout_style=menu









share|improve this question

























  • Need ro see output for sudo parted -l and for grep -A10 -i 'Windows' /boot/grub/grub.cfg.

    – Paul Benson
    Feb 4 at 0:43











  • did you happen to change SATA mode in the BIOS, from RAID (or Intel RST) to AHCI...? If so, that could cause the problem you describe.

    – TonyB
    Feb 4 at 0:47











  • @PaulBenson added outputs to post

    – blastpower5
    Feb 4 at 0:58











  • @TonyB actually yes I did, i think that was to fix an issue during installing ubuntu from USB stick where it would not recognize my hard drive, i will change it back to RAID and see if it fixes anything

    – blastpower5
    Feb 4 at 0:59











  • Does your PC happen to have Intel Rapid Storage Technology installed on it? Perhaps Optane memory? I helped a friend install a dual boot on a system like that and there are specific steps you have to take to enable a dual boot environment... this link describes the steps.

    – TonyB
    Feb 4 at 1:04
















0












0








0








I know there are alot of previous questions on this topic, but I've tried alot of the solutions and nothing has been working.
I ran boot-repair on ubuntu and here is the pastebin link it gives: http://paste.ubuntu.com/p/VKwZsFmv7n/



Before running boot-repair, I could see on GRUB: Ubuntu, advanced options for Ubuntu, and Windows startup manager. Loading Ubuntu works fine, but trying to load into Windows 10 brought up a continuous loop of a screen "Could not startup Windows" with options to restart or go to advanced options. Eventually I decided to perform a factory reset through the advanced options, but Windows 10 still could not be booted into.



After running boot-repair, the GRUB menu has many more items with titles like "...windows..efi". Starting into some of them brings up a black screen with text: "no image found", and others bring me to a screen that lets me factory reset once again, or attempt to repair boot (I've tried both of these many times, no solution found yet).



Desperate for any help now into being able to boot into Windows 10 again, thanks in advance for any help.



Edit: sudo parted -l gives



Model: NVMe Device (nvme)
Disk /dev/nvme0n1: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 683MB 682MB fat32 EFI system partition boot, esp
2 683MB 817MB 134MB Microsoft reserved partition msftres
3 817MB 220GB 219GB ntfs Basic data partition msftdata
7 220GB 241GB 21.0GB ext4
4 241GB 242GB 1038MB ntfs hidden, diag
5 242GB 255GB 13.3GB ntfs hidden, diag
6 255GB 256GB 1152MB ntfs hidden, diag


and grep -A10 -i 'Windows' /boot/grub/grub.cfg gives



menuentry "Windows UEFI bootmgfw.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi
}

menuentry "Windows Boot UEFI loader" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Boot/bkpbootx64.efi
}

menuentry "Windows Boot UEFI fbx64.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Boot/fbx64.efi
}

menuentry "EFI/ubuntu/fwupx64.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/ubuntu/fwupx64.efi
}

menuentry "EFI/ubuntu/mmx64.efi" {
--
menuentry 'Windows Boot Manager (on /dev/nvme0n1p1)' --class windows --class os $menuentry_id_option 'osprober-efi-D85B-0CB1' {
insmod part_gpt
insmod fat
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root D85B-0CB1
else
search --no-floppy --fs-uuid --set=root D85B-0CB1
fi
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}
set timeout_style=menu









share|improve this question
















I know there are alot of previous questions on this topic, but I've tried alot of the solutions and nothing has been working.
I ran boot-repair on ubuntu and here is the pastebin link it gives: http://paste.ubuntu.com/p/VKwZsFmv7n/



Before running boot-repair, I could see on GRUB: Ubuntu, advanced options for Ubuntu, and Windows startup manager. Loading Ubuntu works fine, but trying to load into Windows 10 brought up a continuous loop of a screen "Could not startup Windows" with options to restart or go to advanced options. Eventually I decided to perform a factory reset through the advanced options, but Windows 10 still could not be booted into.



After running boot-repair, the GRUB menu has many more items with titles like "...windows..efi". Starting into some of them brings up a black screen with text: "no image found", and others bring me to a screen that lets me factory reset once again, or attempt to repair boot (I've tried both of these many times, no solution found yet).



Desperate for any help now into being able to boot into Windows 10 again, thanks in advance for any help.



Edit: sudo parted -l gives



Model: NVMe Device (nvme)
Disk /dev/nvme0n1: 256GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number Start End Size File system Name Flags
1 1049kB 683MB 682MB fat32 EFI system partition boot, esp
2 683MB 817MB 134MB Microsoft reserved partition msftres
3 817MB 220GB 219GB ntfs Basic data partition msftdata
7 220GB 241GB 21.0GB ext4
4 241GB 242GB 1038MB ntfs hidden, diag
5 242GB 255GB 13.3GB ntfs hidden, diag
6 255GB 256GB 1152MB ntfs hidden, diag


and grep -A10 -i 'Windows' /boot/grub/grub.cfg gives



menuentry "Windows UEFI bootmgfw.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi
}

menuentry "Windows Boot UEFI loader" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Boot/bkpbootx64.efi
}

menuentry "Windows Boot UEFI fbx64.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/Boot/fbx64.efi
}

menuentry "EFI/ubuntu/fwupx64.efi" {
search --fs-uuid --no-floppy --set=root D85B-0CB1
chainloader (${root})/EFI/ubuntu/fwupx64.efi
}

menuentry "EFI/ubuntu/mmx64.efi" {
--
menuentry 'Windows Boot Manager (on /dev/nvme0n1p1)' --class windows --class os $menuentry_id_option 'osprober-efi-D85B-0CB1' {
insmod part_gpt
insmod fat
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root D85B-0CB1
else
search --no-floppy --fs-uuid --set=root D85B-0CB1
fi
chainloader /EFI/Microsoft/Boot/bootmgfw.efi
}
set timeout_style=menu






boot dual-boot uefi






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Feb 4 at 0:57







blastpower5

















asked Feb 3 at 23:37









blastpower5blastpower5

1613




1613













  • Need ro see output for sudo parted -l and for grep -A10 -i 'Windows' /boot/grub/grub.cfg.

    – Paul Benson
    Feb 4 at 0:43











  • did you happen to change SATA mode in the BIOS, from RAID (or Intel RST) to AHCI...? If so, that could cause the problem you describe.

    – TonyB
    Feb 4 at 0:47











  • @PaulBenson added outputs to post

    – blastpower5
    Feb 4 at 0:58











  • @TonyB actually yes I did, i think that was to fix an issue during installing ubuntu from USB stick where it would not recognize my hard drive, i will change it back to RAID and see if it fixes anything

    – blastpower5
    Feb 4 at 0:59











  • Does your PC happen to have Intel Rapid Storage Technology installed on it? Perhaps Optane memory? I helped a friend install a dual boot on a system like that and there are specific steps you have to take to enable a dual boot environment... this link describes the steps.

    – TonyB
    Feb 4 at 1:04





















  • Need ro see output for sudo parted -l and for grep -A10 -i 'Windows' /boot/grub/grub.cfg.

    – Paul Benson
    Feb 4 at 0:43











  • did you happen to change SATA mode in the BIOS, from RAID (or Intel RST) to AHCI...? If so, that could cause the problem you describe.

    – TonyB
    Feb 4 at 0:47











  • @PaulBenson added outputs to post

    – blastpower5
    Feb 4 at 0:58











  • @TonyB actually yes I did, i think that was to fix an issue during installing ubuntu from USB stick where it would not recognize my hard drive, i will change it back to RAID and see if it fixes anything

    – blastpower5
    Feb 4 at 0:59











  • Does your PC happen to have Intel Rapid Storage Technology installed on it? Perhaps Optane memory? I helped a friend install a dual boot on a system like that and there are specific steps you have to take to enable a dual boot environment... this link describes the steps.

    – TonyB
    Feb 4 at 1:04



















Need ro see output for sudo parted -l and for grep -A10 -i 'Windows' /boot/grub/grub.cfg.

– Paul Benson
Feb 4 at 0:43





Need ro see output for sudo parted -l and for grep -A10 -i 'Windows' /boot/grub/grub.cfg.

– Paul Benson
Feb 4 at 0:43













did you happen to change SATA mode in the BIOS, from RAID (or Intel RST) to AHCI...? If so, that could cause the problem you describe.

– TonyB
Feb 4 at 0:47





did you happen to change SATA mode in the BIOS, from RAID (or Intel RST) to AHCI...? If so, that could cause the problem you describe.

– TonyB
Feb 4 at 0:47













@PaulBenson added outputs to post

– blastpower5
Feb 4 at 0:58





@PaulBenson added outputs to post

– blastpower5
Feb 4 at 0:58













@TonyB actually yes I did, i think that was to fix an issue during installing ubuntu from USB stick where it would not recognize my hard drive, i will change it back to RAID and see if it fixes anything

– blastpower5
Feb 4 at 0:59





@TonyB actually yes I did, i think that was to fix an issue during installing ubuntu from USB stick where it would not recognize my hard drive, i will change it back to RAID and see if it fixes anything

– blastpower5
Feb 4 at 0:59













Does your PC happen to have Intel Rapid Storage Technology installed on it? Perhaps Optane memory? I helped a friend install a dual boot on a system like that and there are specific steps you have to take to enable a dual boot environment... this link describes the steps.

– TonyB
Feb 4 at 1:04







Does your PC happen to have Intel Rapid Storage Technology installed on it? Perhaps Optane memory? I helped a friend install a dual boot on a system like that and there are specific steps you have to take to enable a dual boot environment... this link describes the steps.

– TonyB
Feb 4 at 1:04












4 Answers
4






active

oldest

votes


















1














I had a similar issue to what Maciej above said, except my windows partition was UEFI and my ubuntu kept installing in legacy, so I would then only be able to get into Windows by changing my BIOS settings. The issue was that my USB stick was legacy and didn't support UEFI, so the install would only run legacy. Once I created a new boot/install disk on a better USB I was able to get both to work on the same boot menu






share|improve this answer































    0














    This is just a speculation, but may help. Maybe GRUB is using old GPT boot, a.k.a. BIOS, a.k.a. Legacy mode, while Windows are EFI a.k.a. UEFI. So while in BIOS mode, there is no way to start EFI Windows.



    You can go into BIOS and try to force EFI boot, or by setting "EFI only", or by disabling "Legacy mode", "BIOS mode" or whatever, depending on BIOS. Also disabling "Fast boot" and other possible "improvement" may sometimes help.



    You can also first try to summon BIOS boot menu, sometimes by pressing F12, and check if it allows direct start of EFI Windows, without even booting GRUB.






    share|improve this answer































      0














      Fixed issue with not being able to load into Windows from GRUB by switching back from AHCI mode to RAID mode in BIOS.






      share|improve this answer































        0














        OK. The last option in grub.cfg, (menuentry 'Windows Boot Manager on /dev/nvme0n1p1) is the important one that boots into Windows. All the other Windows entries are superfluous.



        There is one crucial line missing - set root='x0, gpt1'. For hard drives x=hd, but in your case it may not be hd for NVMes, but not certain of the notation as I don't use an M2 SSD. The first disk always has a '0' at the end, and in a 2 disk drive the 2nd disk has the notation '1'. So in my case I have hd0 referred to for my Windows disk, and hd1 for my Linux disk as I have 2 hard drives, one for each system. Whatever, that missing line defines where the esp is for Windows and should be 4th line down for the menu entry, so possibly something like 'set root='nvme0,gpt1', or it may well still be notated as set root='hd0,gpt1' despite what I've suggested. The easiest way to know is look in the file at the menu entry for Ubuntu and see how 'set root=...' is notated there for an NVMe. Personally I'd try using hd0 first.



        There is a further issue that you may have damaged the system boot partition for Windows. If you boot from BIOS can you still boot into Windows as first boot entry?






        share|improve this answer

























          Your Answer








          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "89"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1115388%2fdual-booting-ubuntu-cant-load-windows-10%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          4 Answers
          4






          active

          oldest

          votes








          4 Answers
          4






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1














          I had a similar issue to what Maciej above said, except my windows partition was UEFI and my ubuntu kept installing in legacy, so I would then only be able to get into Windows by changing my BIOS settings. The issue was that my USB stick was legacy and didn't support UEFI, so the install would only run legacy. Once I created a new boot/install disk on a better USB I was able to get both to work on the same boot menu






          share|improve this answer




























            1














            I had a similar issue to what Maciej above said, except my windows partition was UEFI and my ubuntu kept installing in legacy, so I would then only be able to get into Windows by changing my BIOS settings. The issue was that my USB stick was legacy and didn't support UEFI, so the install would only run legacy. Once I created a new boot/install disk on a better USB I was able to get both to work on the same boot menu






            share|improve this answer


























              1












              1








              1







              I had a similar issue to what Maciej above said, except my windows partition was UEFI and my ubuntu kept installing in legacy, so I would then only be able to get into Windows by changing my BIOS settings. The issue was that my USB stick was legacy and didn't support UEFI, so the install would only run legacy. Once I created a new boot/install disk on a better USB I was able to get both to work on the same boot menu






              share|improve this answer













              I had a similar issue to what Maciej above said, except my windows partition was UEFI and my ubuntu kept installing in legacy, so I would then only be able to get into Windows by changing my BIOS settings. The issue was that my USB stick was legacy and didn't support UEFI, so the install would only run legacy. Once I created a new boot/install disk on a better USB I was able to get both to work on the same boot menu







              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Feb 8 at 0:36









              Kevin CKevin C

              193




              193

























                  0














                  This is just a speculation, but may help. Maybe GRUB is using old GPT boot, a.k.a. BIOS, a.k.a. Legacy mode, while Windows are EFI a.k.a. UEFI. So while in BIOS mode, there is no way to start EFI Windows.



                  You can go into BIOS and try to force EFI boot, or by setting "EFI only", or by disabling "Legacy mode", "BIOS mode" or whatever, depending on BIOS. Also disabling "Fast boot" and other possible "improvement" may sometimes help.



                  You can also first try to summon BIOS boot menu, sometimes by pressing F12, and check if it allows direct start of EFI Windows, without even booting GRUB.






                  share|improve this answer




























                    0














                    This is just a speculation, but may help. Maybe GRUB is using old GPT boot, a.k.a. BIOS, a.k.a. Legacy mode, while Windows are EFI a.k.a. UEFI. So while in BIOS mode, there is no way to start EFI Windows.



                    You can go into BIOS and try to force EFI boot, or by setting "EFI only", or by disabling "Legacy mode", "BIOS mode" or whatever, depending on BIOS. Also disabling "Fast boot" and other possible "improvement" may sometimes help.



                    You can also first try to summon BIOS boot menu, sometimes by pressing F12, and check if it allows direct start of EFI Windows, without even booting GRUB.






                    share|improve this answer


























                      0












                      0








                      0







                      This is just a speculation, but may help. Maybe GRUB is using old GPT boot, a.k.a. BIOS, a.k.a. Legacy mode, while Windows are EFI a.k.a. UEFI. So while in BIOS mode, there is no way to start EFI Windows.



                      You can go into BIOS and try to force EFI boot, or by setting "EFI only", or by disabling "Legacy mode", "BIOS mode" or whatever, depending on BIOS. Also disabling "Fast boot" and other possible "improvement" may sometimes help.



                      You can also first try to summon BIOS boot menu, sometimes by pressing F12, and check if it allows direct start of EFI Windows, without even booting GRUB.






                      share|improve this answer













                      This is just a speculation, but may help. Maybe GRUB is using old GPT boot, a.k.a. BIOS, a.k.a. Legacy mode, while Windows are EFI a.k.a. UEFI. So while in BIOS mode, there is no way to start EFI Windows.



                      You can go into BIOS and try to force EFI boot, or by setting "EFI only", or by disabling "Legacy mode", "BIOS mode" or whatever, depending on BIOS. Also disabling "Fast boot" and other possible "improvement" may sometimes help.



                      You can also first try to summon BIOS boot menu, sometimes by pressing F12, and check if it allows direct start of EFI Windows, without even booting GRUB.







                      share|improve this answer












                      share|improve this answer



                      share|improve this answer










                      answered Feb 4 at 0:48









                      Maciej PolańskiMaciej Polański

                      12




                      12























                          0














                          Fixed issue with not being able to load into Windows from GRUB by switching back from AHCI mode to RAID mode in BIOS.






                          share|improve this answer




























                            0














                            Fixed issue with not being able to load into Windows from GRUB by switching back from AHCI mode to RAID mode in BIOS.






                            share|improve this answer


























                              0












                              0








                              0







                              Fixed issue with not being able to load into Windows from GRUB by switching back from AHCI mode to RAID mode in BIOS.






                              share|improve this answer













                              Fixed issue with not being able to load into Windows from GRUB by switching back from AHCI mode to RAID mode in BIOS.







                              share|improve this answer












                              share|improve this answer



                              share|improve this answer










                              answered Feb 4 at 1:25









                              blastpower5blastpower5

                              1613




                              1613























                                  0














                                  OK. The last option in grub.cfg, (menuentry 'Windows Boot Manager on /dev/nvme0n1p1) is the important one that boots into Windows. All the other Windows entries are superfluous.



                                  There is one crucial line missing - set root='x0, gpt1'. For hard drives x=hd, but in your case it may not be hd for NVMes, but not certain of the notation as I don't use an M2 SSD. The first disk always has a '0' at the end, and in a 2 disk drive the 2nd disk has the notation '1'. So in my case I have hd0 referred to for my Windows disk, and hd1 for my Linux disk as I have 2 hard drives, one for each system. Whatever, that missing line defines where the esp is for Windows and should be 4th line down for the menu entry, so possibly something like 'set root='nvme0,gpt1', or it may well still be notated as set root='hd0,gpt1' despite what I've suggested. The easiest way to know is look in the file at the menu entry for Ubuntu and see how 'set root=...' is notated there for an NVMe. Personally I'd try using hd0 first.



                                  There is a further issue that you may have damaged the system boot partition for Windows. If you boot from BIOS can you still boot into Windows as first boot entry?






                                  share|improve this answer






























                                    0














                                    OK. The last option in grub.cfg, (menuentry 'Windows Boot Manager on /dev/nvme0n1p1) is the important one that boots into Windows. All the other Windows entries are superfluous.



                                    There is one crucial line missing - set root='x0, gpt1'. For hard drives x=hd, but in your case it may not be hd for NVMes, but not certain of the notation as I don't use an M2 SSD. The first disk always has a '0' at the end, and in a 2 disk drive the 2nd disk has the notation '1'. So in my case I have hd0 referred to for my Windows disk, and hd1 for my Linux disk as I have 2 hard drives, one for each system. Whatever, that missing line defines where the esp is for Windows and should be 4th line down for the menu entry, so possibly something like 'set root='nvme0,gpt1', or it may well still be notated as set root='hd0,gpt1' despite what I've suggested. The easiest way to know is look in the file at the menu entry for Ubuntu and see how 'set root=...' is notated there for an NVMe. Personally I'd try using hd0 first.



                                    There is a further issue that you may have damaged the system boot partition for Windows. If you boot from BIOS can you still boot into Windows as first boot entry?






                                    share|improve this answer




























                                      0












                                      0








                                      0







                                      OK. The last option in grub.cfg, (menuentry 'Windows Boot Manager on /dev/nvme0n1p1) is the important one that boots into Windows. All the other Windows entries are superfluous.



                                      There is one crucial line missing - set root='x0, gpt1'. For hard drives x=hd, but in your case it may not be hd for NVMes, but not certain of the notation as I don't use an M2 SSD. The first disk always has a '0' at the end, and in a 2 disk drive the 2nd disk has the notation '1'. So in my case I have hd0 referred to for my Windows disk, and hd1 for my Linux disk as I have 2 hard drives, one for each system. Whatever, that missing line defines where the esp is for Windows and should be 4th line down for the menu entry, so possibly something like 'set root='nvme0,gpt1', or it may well still be notated as set root='hd0,gpt1' despite what I've suggested. The easiest way to know is look in the file at the menu entry for Ubuntu and see how 'set root=...' is notated there for an NVMe. Personally I'd try using hd0 first.



                                      There is a further issue that you may have damaged the system boot partition for Windows. If you boot from BIOS can you still boot into Windows as first boot entry?






                                      share|improve this answer















                                      OK. The last option in grub.cfg, (menuentry 'Windows Boot Manager on /dev/nvme0n1p1) is the important one that boots into Windows. All the other Windows entries are superfluous.



                                      There is one crucial line missing - set root='x0, gpt1'. For hard drives x=hd, but in your case it may not be hd for NVMes, but not certain of the notation as I don't use an M2 SSD. The first disk always has a '0' at the end, and in a 2 disk drive the 2nd disk has the notation '1'. So in my case I have hd0 referred to for my Windows disk, and hd1 for my Linux disk as I have 2 hard drives, one for each system. Whatever, that missing line defines where the esp is for Windows and should be 4th line down for the menu entry, so possibly something like 'set root='nvme0,gpt1', or it may well still be notated as set root='hd0,gpt1' despite what I've suggested. The easiest way to know is look in the file at the menu entry for Ubuntu and see how 'set root=...' is notated there for an NVMe. Personally I'd try using hd0 first.



                                      There is a further issue that you may have damaged the system boot partition for Windows. If you boot from BIOS can you still boot into Windows as first boot entry?







                                      share|improve this answer














                                      share|improve this answer



                                      share|improve this answer








                                      edited Feb 4 at 4:30

























                                      answered Feb 4 at 4:03









                                      Paul BensonPaul Benson

                                      483119




                                      483119






























                                          draft saved

                                          draft discarded




















































                                          Thanks for contributing an answer to Ask Ubuntu!


                                          • Please be sure to answer the question. Provide details and share your research!

                                          But avoid



                                          • Asking for help, clarification, or responding to other answers.

                                          • Making statements based on opinion; back them up with references or personal experience.


                                          To learn more, see our tips on writing great answers.




                                          draft saved


                                          draft discarded














                                          StackExchange.ready(
                                          function () {
                                          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1115388%2fdual-booting-ubuntu-cant-load-windows-10%23new-answer', 'question_page');
                                          }
                                          );

                                          Post as a guest















                                          Required, but never shown





















































                                          Required, but never shown














                                          Required, but never shown












                                          Required, but never shown







                                          Required, but never shown

































                                          Required, but never shown














                                          Required, but never shown












                                          Required, but never shown







                                          Required, but never shown







                                          Popular posts from this blog

                                          How to make a Squid Proxy server?

                                          Is this a new Fibonacci Identity?

                                          19世紀