Dual boot: either no bcd, or no grub
up vote
0
down vote
favorite
I installed Ubuntu 18.10 alongside Windows 10.
When I boot, I see grub, and I can boot into Ubuntu.
But if I choose Windows from the grub menu, I get an error message saying that BCD is missing.
Now, I can fix that with my Macrium Reflect CD, if I boot it EFI (my AMI BIOS is very temperamental about booting removable media as EFI). It fixes Windows, but then, grub is gone, and the only way I can get to Ubuntu is by manually selecting it in BIOS.
I tried running boot-repair. When I run it from my Ubuntu installation, it complains that I did not boot efi. If I run it from DVD, either my BIOS fails to boot it EFI, or it fails to repair.
I tried changing BIOS from efi to legacy, but that didn't help much. Here is log:
http://paste.ubuntu.com/p/TmnmRTw7Vd/
dual-boot uefi
asked Nov 28 at 18:02
shmu
13
New contributor
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
up vote
0
down vote
favorite
I installed Ubuntu 18.10 alongside Windows 10.
When I boot, I see grub, and I can boot into Ubuntu.
But if I choose Windows from the grub menu, I get an error message saying that BCD is missing.
Now, I can fix that with my Macrium Reflect CD, if I boot it EFI (my AMI BIOS is very temperamental about booting removable media as EFI). It fixes Windows, but then, grub is gone, and the only way I can get to Ubuntu is by manually selecting it in BIOS.
I tried running boot-repair. When I run it from my Ubuntu installation, it complains that I did not boot efi. If I run it from DVD, either my BIOS fails to boot it EFI, or it fails to repair.
I tried changing BIOS from efi to legacy, but that didn't help much. Here is log:
http://paste.ubuntu.com/p/TmnmRTw7Vd/
dual-boot uefi
asked Nov 28 at 18:02
shmu
13
New contributor
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Windows is in UEFI boot mode & Ubuntu is in BIOS boot mode. But you do not show a Windows boot entry in UEFI. Best to only boot in UEFI mode and convert Ubuntu/grub to UEFI (using Boot-Repair in UEFI mode). Check that UEFI Secure boot is off. And Windows fast start up is off. From live installer this will add Windows UEFI entry:sudo efibootmgr -c -L "Windows Boot Manager" -l "EFIMicrosoftBootbootmgfw.efi" -d /dev/sda -p 2or use your Windows repair console to fix.
– oldfred
Nov 28 at 19:11
Thanks. Please tell how to fix from Windows, because my BIOS won't let me boot UEFI to Ubuntu from removable media.
– shmu
Nov 29 at 5:10
I discovered an interesting workaround: I added Macrium Reflect rescue environment to the Windows boot menu, which automatically adds also the Windows recovery options -- in which I can choose to boot from hard disk, and that takes me straight to grub, and from there I am booted into Ubuntu, no questions asked.
– shmu
Nov 29 at 7:00
I succeeded in EUFI boot from flash drive, by renaming a file in it. "I went into the folder EFI BOOT and renamed the file grubx64.efi to mmx64.efi Reboot the machine and it should work. Hope that helps." askubuntu.com/questions/1085550/… Then, boot-repair running from Ubuntu on flash drive was able to fix it.
– shmu
Nov 30 at 5:52
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I installed Ubuntu 18.10 alongside Windows 10.
When I boot, I see grub, and I can boot into Ubuntu.
But if I choose Windows from the grub menu, I get an error message saying that BCD is missing.
Now, I can fix that with my Macrium Reflect CD, if I boot it EFI (my AMI BIOS is very temperamental about booting removable media as EFI). It fixes Windows, but then, grub is gone, and the only way I can get to Ubuntu is by manually selecting it in BIOS.
I tried running boot-repair. When I run it from my Ubuntu installation, it complains that I did not boot efi. If I run it from DVD, either my BIOS fails to boot it EFI, or it fails to repair.
I tried changing BIOS from efi to legacy, but that didn't help much. Here is log:
http://paste.ubuntu.com/p/TmnmRTw7Vd/
dual-boot uefi
asked Nov 28 at 18:02
shmu
13
New contributor
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I installed Ubuntu 18.10 alongside Windows 10.
When I boot, I see grub, and I can boot into Ubuntu.
But if I choose Windows from the grub menu, I get an error message saying that BCD is missing.
Now, I can fix that with my Macrium Reflect CD, if I boot it EFI (my AMI BIOS is very temperamental about booting removable media as EFI). It fixes Windows, but then, grub is gone, and the only way I can get to Ubuntu is by manually selecting it in BIOS.
I tried running boot-repair. When I run it from my Ubuntu installation, it complains that I did not boot efi. If I run it from DVD, either my BIOS fails to boot it EFI, or it fails to repair.
I tried changing BIOS from efi to legacy, but that didn't help much. Here is log:
http://paste.ubuntu.com/p/TmnmRTw7Vd/
dual-boot uefi
dual-boot uefi
asked Nov 28 at 18:02
shmu
13
New contributor
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 28 at 18:02
shmu
13
New contributor
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 28 at 18:02
shmu
13
New contributor
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 28 at 18:02
shmu
13
asked Nov 28 at 18:02
shmu
13
13
New contributor
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
shmu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Windows is in UEFI boot mode & Ubuntu is in BIOS boot mode. But you do not show a Windows boot entry in UEFI. Best to only boot in UEFI mode and convert Ubuntu/grub to UEFI (using Boot-Repair in UEFI mode). Check that UEFI Secure boot is off. And Windows fast start up is off. From live installer this will add Windows UEFI entry:sudo efibootmgr -c -L "Windows Boot Manager" -l "EFIMicrosoftBootbootmgfw.efi" -d /dev/sda -p 2or use your Windows repair console to fix.
– oldfred
Nov 28 at 19:11
Thanks. Please tell how to fix from Windows, because my BIOS won't let me boot UEFI to Ubuntu from removable media.
– shmu
Nov 29 at 5:10
I discovered an interesting workaround: I added Macrium Reflect rescue environment to the Windows boot menu, which automatically adds also the Windows recovery options -- in which I can choose to boot from hard disk, and that takes me straight to grub, and from there I am booted into Ubuntu, no questions asked.
– shmu
Nov 29 at 7:00
I succeeded in EUFI boot from flash drive, by renaming a file in it. "I went into the folder EFI BOOT and renamed the file grubx64.efi to mmx64.efi Reboot the machine and it should work. Hope that helps." askubuntu.com/questions/1085550/… Then, boot-repair running from Ubuntu on flash drive was able to fix it.
– shmu
Nov 30 at 5:52
add a comment |
Windows is in UEFI boot mode & Ubuntu is in BIOS boot mode. But you do not show a Windows boot entry in UEFI. Best to only boot in UEFI mode and convert Ubuntu/grub to UEFI (using Boot-Repair in UEFI mode). Check that UEFI Secure boot is off. And Windows fast start up is off. From live installer this will add Windows UEFI entry:sudo efibootmgr -c -L "Windows Boot Manager" -l "EFIMicrosoftBootbootmgfw.efi" -d /dev/sda -p 2or use your Windows repair console to fix.
– oldfred
Nov 28 at 19:11
Thanks. Please tell how to fix from Windows, because my BIOS won't let me boot UEFI to Ubuntu from removable media.
– shmu
Nov 29 at 5:10
I discovered an interesting workaround: I added Macrium Reflect rescue environment to the Windows boot menu, which automatically adds also the Windows recovery options -- in which I can choose to boot from hard disk, and that takes me straight to grub, and from there I am booted into Ubuntu, no questions asked.
– shmu
Nov 29 at 7:00
I succeeded in EUFI boot from flash drive, by renaming a file in it. "I went into the folder EFI BOOT and renamed the file grubx64.efi to mmx64.efi Reboot the machine and it should work. Hope that helps." askubuntu.com/questions/1085550/… Then, boot-repair running from Ubuntu on flash drive was able to fix it.
– shmu
Nov 30 at 5:52
Windows is in UEFI boot mode & Ubuntu is in BIOS boot mode. But you do not show a Windows boot entry in UEFI. Best to only boot in UEFI mode and convert Ubuntu/grub to UEFI (using Boot-Repair in UEFI mode). Check that UEFI Secure boot is off. And Windows fast start up is off. From live installer this will add Windows UEFI entry:
sudo efibootmgr -c -L "Windows Boot Manager" -l "EFIMicrosoftBootbootmgfw.efi" -d /dev/sda -p 2 or use your Windows repair console to fix.– oldfred
Nov 28 at 19:11
Windows is in UEFI boot mode & Ubuntu is in BIOS boot mode. But you do not show a Windows boot entry in UEFI. Best to only boot in UEFI mode and convert Ubuntu/grub to UEFI (using Boot-Repair in UEFI mode). Check that UEFI Secure boot is off. And Windows fast start up is off. From live installer this will add Windows UEFI entry:
sudo efibootmgr -c -L "Windows Boot Manager" -l "EFIMicrosoftBootbootmgfw.efi" -d /dev/sda -p 2 or use your Windows repair console to fix.– oldfred
Nov 28 at 19:11
Thanks. Please tell how to fix from Windows, because my BIOS won't let me boot UEFI to Ubuntu from removable media.
– shmu
Nov 29 at 5:10
Thanks. Please tell how to fix from Windows, because my BIOS won't let me boot UEFI to Ubuntu from removable media.
– shmu
Nov 29 at 5:10
I discovered an interesting workaround: I added Macrium Reflect rescue environment to the Windows boot menu, which automatically adds also the Windows recovery options -- in which I can choose to boot from hard disk, and that takes me straight to grub, and from there I am booted into Ubuntu, no questions asked.
– shmu
Nov 29 at 7:00
I discovered an interesting workaround: I added Macrium Reflect rescue environment to the Windows boot menu, which automatically adds also the Windows recovery options -- in which I can choose to boot from hard disk, and that takes me straight to grub, and from there I am booted into Ubuntu, no questions asked.
– shmu
Nov 29 at 7:00
I succeeded in EUFI boot from flash drive, by renaming a file in it. "I went into the folder EFI BOOT and renamed the file grubx64.efi to mmx64.efi Reboot the machine and it should work. Hope that helps." askubuntu.com/questions/1085550/… Then, boot-repair running from Ubuntu on flash drive was able to fix it.
– shmu
Nov 30 at 5:52
I succeeded in EUFI boot from flash drive, by renaming a file in it. "I went into the folder EFI BOOT and renamed the file grubx64.efi to mmx64.efi Reboot the machine and it should work. Hope that helps." askubuntu.com/questions/1085550/… Then, boot-repair running from Ubuntu on flash drive was able to fix it.
– shmu
Nov 30 at 5:52
add a comment |
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
shmu is a new contributor. Be nice, and check out our Code of Conduct.
shmu is a new contributor. Be nice, and check out our Code of Conduct.
shmu is a new contributor. Be nice, and check out our Code of Conduct.
shmu is a new contributor. Be nice, and check out our Code of Conduct.
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.
Some of your past answers have not been well-received, and you're in danger of being blocked from answering.
Please pay close attention to the following guidance:
- 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.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2faskubuntu.com%2fquestions%2f1096881%2fdual-boot-either-no-bcd-or-no-grub%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
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
Windows is in UEFI boot mode & Ubuntu is in BIOS boot mode. But you do not show a Windows boot entry in UEFI. Best to only boot in UEFI mode and convert Ubuntu/grub to UEFI (using Boot-Repair in UEFI mode). Check that UEFI Secure boot is off. And Windows fast start up is off. From live installer this will add Windows UEFI entry:
sudo efibootmgr -c -L "Windows Boot Manager" -l "EFIMicrosoftBootbootmgfw.efi" -d /dev/sda -p 2or use your Windows repair console to fix.– oldfred
Nov 28 at 19:11
Thanks. Please tell how to fix from Windows, because my BIOS won't let me boot UEFI to Ubuntu from removable media.
– shmu
Nov 29 at 5:10
I discovered an interesting workaround: I added Macrium Reflect rescue environment to the Windows boot menu, which automatically adds also the Windows recovery options -- in which I can choose to boot from hard disk, and that takes me straight to grub, and from there I am booted into Ubuntu, no questions asked.
– shmu
Nov 29 at 7:00
I succeeded in EUFI boot from flash drive, by renaming a file in it. "I went into the folder EFI BOOT and renamed the file grubx64.efi to mmx64.efi Reboot the machine and it should work. Hope that helps." askubuntu.com/questions/1085550/… Then, boot-repair running from Ubuntu on flash drive was able to fix it.
– shmu
Nov 30 at 5:52