Dual-boot boot menu does not show up after installing Ubuntu 15.10 alongside Windows 10
up vote
10
down vote
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I have installed Ubuntu 15.10 alongside Windows 10 with UEFI. To install Ubuntu, I chose the option alongside windows 10
or something similar to this. Then I created a new partition for Ubuntu and installed it. After installation, the boot menu did not show up. Initially I thought Ubuntu has not been installed, but when I plugged in the USB drive and wanted to install Ubuntu I saw an option of reinstalling Ubuntu on my machine. So, I found out that Ubuntu is installed. Pressing F8
and F12
also does not help. Can anyone help me bringing up the Grub boot men?
In Windows, I also entered the command bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
in cmd, but still the boot menu does not show up.
dual-boot grub2 15.10 windows-10
add a comment |
up vote
10
down vote
favorite
I have installed Ubuntu 15.10 alongside Windows 10 with UEFI. To install Ubuntu, I chose the option alongside windows 10
or something similar to this. Then I created a new partition for Ubuntu and installed it. After installation, the boot menu did not show up. Initially I thought Ubuntu has not been installed, but when I plugged in the USB drive and wanted to install Ubuntu I saw an option of reinstalling Ubuntu on my machine. So, I found out that Ubuntu is installed. Pressing F8
and F12
also does not help. Can anyone help me bringing up the Grub boot men?
In Windows, I also entered the command bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
in cmd, but still the boot menu does not show up.
dual-boot grub2 15.10 windows-10
You can try using theboot-repair
tool
– TheWanderer
Jan 7 '16 at 2:14
Many Acer laptops need a UEFI update, and all Acer laptops need you to enable "trust" from within UEFI on the Ubuntu/grub UEFI boot entries. askubuntu.com/questions/597213 Acer Aspire E15 will not dual boot, many details Trust settings in step 35 of this answer: askubuntu.com/questions/627416/…
– karel
Dec 6 at 23:41
add a comment |
up vote
10
down vote
favorite
up vote
10
down vote
favorite
I have installed Ubuntu 15.10 alongside Windows 10 with UEFI. To install Ubuntu, I chose the option alongside windows 10
or something similar to this. Then I created a new partition for Ubuntu and installed it. After installation, the boot menu did not show up. Initially I thought Ubuntu has not been installed, but when I plugged in the USB drive and wanted to install Ubuntu I saw an option of reinstalling Ubuntu on my machine. So, I found out that Ubuntu is installed. Pressing F8
and F12
also does not help. Can anyone help me bringing up the Grub boot men?
In Windows, I also entered the command bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
in cmd, but still the boot menu does not show up.
dual-boot grub2 15.10 windows-10
I have installed Ubuntu 15.10 alongside Windows 10 with UEFI. To install Ubuntu, I chose the option alongside windows 10
or something similar to this. Then I created a new partition for Ubuntu and installed it. After installation, the boot menu did not show up. Initially I thought Ubuntu has not been installed, but when I plugged in the USB drive and wanted to install Ubuntu I saw an option of reinstalling Ubuntu on my machine. So, I found out that Ubuntu is installed. Pressing F8
and F12
also does not help. Can anyone help me bringing up the Grub boot men?
In Windows, I also entered the command bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
in cmd, but still the boot menu does not show up.
dual-boot grub2 15.10 windows-10
dual-boot grub2 15.10 windows-10
asked Jan 7 '16 at 1:53
Amir
2521313
2521313
You can try using theboot-repair
tool
– TheWanderer
Jan 7 '16 at 2:14
Many Acer laptops need a UEFI update, and all Acer laptops need you to enable "trust" from within UEFI on the Ubuntu/grub UEFI boot entries. askubuntu.com/questions/597213 Acer Aspire E15 will not dual boot, many details Trust settings in step 35 of this answer: askubuntu.com/questions/627416/…
– karel
Dec 6 at 23:41
add a comment |
You can try using theboot-repair
tool
– TheWanderer
Jan 7 '16 at 2:14
Many Acer laptops need a UEFI update, and all Acer laptops need you to enable "trust" from within UEFI on the Ubuntu/grub UEFI boot entries. askubuntu.com/questions/597213 Acer Aspire E15 will not dual boot, many details Trust settings in step 35 of this answer: askubuntu.com/questions/627416/…
– karel
Dec 6 at 23:41
You can try using the
boot-repair
tool– TheWanderer
Jan 7 '16 at 2:14
You can try using the
boot-repair
tool– TheWanderer
Jan 7 '16 at 2:14
Many Acer laptops need a UEFI update, and all Acer laptops need you to enable "trust" from within UEFI on the Ubuntu/grub UEFI boot entries. askubuntu.com/questions/597213 Acer Aspire E15 will not dual boot, many details Trust settings in step 35 of this answer: askubuntu.com/questions/627416/…
– karel
Dec 6 at 23:41
Many Acer laptops need a UEFI update, and all Acer laptops need you to enable "trust" from within UEFI on the Ubuntu/grub UEFI boot entries. askubuntu.com/questions/597213 Acer Aspire E15 will not dual boot, many details Trust settings in step 35 of this answer: askubuntu.com/questions/627416/…
– karel
Dec 6 at 23:41
add a comment |
3 Answers
3
active
oldest
votes
up vote
6
down vote
accepted
On Windows 10, go to the start menu.
Search and open Recovery Options. The description for it should say System settings.
Under Advanced startup click Restart now.
Click Use a device; it's description should say
"Use a USB drive, network connection, or Windows recovery DVD".Click Ubuntu and hopefully it should take you to the grub boot menu.
Next try going back to the live Ubuntu session on the USB to reinstall
grub-efi
. On the live session, open a terminal and enter the following commands in:
sudo mount /dev/sda# /mnt
Replace the hashtag in
/dev/sda#
with the number representing the partition where you had Ubuntu installed. You can check usinggnome-disks
orgparted
.
sudo mount /dev/sda# /mnt/boot/efi
Replace the hashtag in
/dev/sda#
with the number representing the EFI partition. It's usually/dev/sda2
.
sudo mount -o bind /dev /mnt/dev
sudo mount -o bind /proc /mnt/proc
sudo mount -o bind /sys /mnt/sys
sudo mount -o bind /run /mnt/run
sudo chroot /mnt/
sudo apt-get install --reinstall grub-efi
sudo update-grub
Reboot.
If that fails, go to your BIOS settings with one of the F keys; that option might be Enter setup. Look for boot option priorities and move Ubuntu above the Windows Boot Manager. Go to the option to save the changes then reboot.
Lastly you can try using Boot-Repair.
Thank you. I followed the steps you mentioned. Everything worked except the last steps. I even followed the boot-repair tool tutorial. It still does not work. However, there has been a change! Now when I click onRecovery Options
and eventually selectUbuntu
, GRUB gets loaded and I see more options there. One of the options is Windows now! But when the computer gets restarted I again need to login into Windows and do the same thing to load up GRUB. What should I do?
– Amir
Jan 7 '16 at 22:02
@Amir, try going to the BIOS and make sureubuntu
is 1st on the boot priority list. If you can log-in to ubuntu, try runningsudo update-grub
.
– Enkouyami
Jan 7 '16 at 22:49
I followed steps 1 to 4. Now, in step 5, I do not have an "Ubuntu" option. I have only two options: USB NIC (IPV4) and USB NIC (IPV6). What should I do from here?
– Erel Segal-Halevi
Oct 16 at 5:15
Also, when I try "sudo mount /dev/sda# /mnt/boot/efi", I get an error: "/mnt/boot/efi: mount point does not exist". Indeed, there is no folder "efi" in /mnt/boot - there is a folder "grub".
– Erel Segal-Halevi
Oct 16 at 5:35
1
Also, when I try "sudo apt-get install --reinstall grub-efi" I get an error: "E: Package grub-efi has no installation candidate" (I have Ubuntu 18.04)
– Erel Segal-Halevi
Oct 16 at 5:38
|
show 5 more comments
up vote
2
down vote
I'm presuming GRUB successfully installed, but something is clearly amiss. I know you said you already tried bcdedit, but here's the command to set it: bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
. If you set this and could not boot, as you have indicated already, don't forget to rescind the change you made using bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi
.
Try following the steps detailed in Enkouyami's answer (i.e. chrooting into your installed Ubuntu system from the live CD and then reinstalling grub manually).
If the above fail, you could try installing grub2win. This allows you to boot grub2 from your Windows EFI firmware by making edits to the boot code. Be sure to follow the instructions carefully on the project's page if taking choosing method.
Another method instead of grub2win is Super Grub2 Disk, which is a live CD that allows you to boot into a variety of operating systems. I would try this first instead of grub2win, as there is less risk involved if something goes awry. I have not used Super Grub2 Disk personally, but I hear it is an incredibly useful tool. Using this tool, you can restore grub by following the instructions here.
add a comment |
up vote
2
down vote
I have read many answers and tried accordingly but the problem was still there, so I decided to do it myself as follows:
- Click the Start menu and select Settings.
- Select UPDATE & SECURITY.
- Click Recovery.
Under Advanced startup, click the Restart now button. The system will restart and show the Windows 10 boot menu.
Select Troubleshoot.
Choose Advanced options.
Select UEFI Firmware Settings.
Click Restart to restart the system and enter UEFI (BIOS) setup utility.
F10 BIOS setup -> System Configuration tab ->
Boot Options -> OS Boot Manager ->
Ubuntu -> (select the Ubuntu option and move this option up to the top of the list) ->
F10 Save and Exit (press F10 to save Ubuntu as the default boot option) ->
F10 (press F10 again to save the changes to the BIOS/UEFI setup utility)
When the computer restarts, the Ubuntu boot menu will be shown.
1
Welcome to Ask Ubuntu. I posted a low quality BIOS screen photo because it was the only photo I had. If you have a more accurate BIOS photo please provide a link to it in a comment and I will embed the new photo into your answer.
– karel
Dec 1 at 4:09
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
6
down vote
accepted
On Windows 10, go to the start menu.
Search and open Recovery Options. The description for it should say System settings.
Under Advanced startup click Restart now.
Click Use a device; it's description should say
"Use a USB drive, network connection, or Windows recovery DVD".Click Ubuntu and hopefully it should take you to the grub boot menu.
Next try going back to the live Ubuntu session on the USB to reinstall
grub-efi
. On the live session, open a terminal and enter the following commands in:
sudo mount /dev/sda# /mnt
Replace the hashtag in
/dev/sda#
with the number representing the partition where you had Ubuntu installed. You can check usinggnome-disks
orgparted
.
sudo mount /dev/sda# /mnt/boot/efi
Replace the hashtag in
/dev/sda#
with the number representing the EFI partition. It's usually/dev/sda2
.
sudo mount -o bind /dev /mnt/dev
sudo mount -o bind /proc /mnt/proc
sudo mount -o bind /sys /mnt/sys
sudo mount -o bind /run /mnt/run
sudo chroot /mnt/
sudo apt-get install --reinstall grub-efi
sudo update-grub
Reboot.
If that fails, go to your BIOS settings with one of the F keys; that option might be Enter setup. Look for boot option priorities and move Ubuntu above the Windows Boot Manager. Go to the option to save the changes then reboot.
Lastly you can try using Boot-Repair.
Thank you. I followed the steps you mentioned. Everything worked except the last steps. I even followed the boot-repair tool tutorial. It still does not work. However, there has been a change! Now when I click onRecovery Options
and eventually selectUbuntu
, GRUB gets loaded and I see more options there. One of the options is Windows now! But when the computer gets restarted I again need to login into Windows and do the same thing to load up GRUB. What should I do?
– Amir
Jan 7 '16 at 22:02
@Amir, try going to the BIOS and make sureubuntu
is 1st on the boot priority list. If you can log-in to ubuntu, try runningsudo update-grub
.
– Enkouyami
Jan 7 '16 at 22:49
I followed steps 1 to 4. Now, in step 5, I do not have an "Ubuntu" option. I have only two options: USB NIC (IPV4) and USB NIC (IPV6). What should I do from here?
– Erel Segal-Halevi
Oct 16 at 5:15
Also, when I try "sudo mount /dev/sda# /mnt/boot/efi", I get an error: "/mnt/boot/efi: mount point does not exist". Indeed, there is no folder "efi" in /mnt/boot - there is a folder "grub".
– Erel Segal-Halevi
Oct 16 at 5:35
1
Also, when I try "sudo apt-get install --reinstall grub-efi" I get an error: "E: Package grub-efi has no installation candidate" (I have Ubuntu 18.04)
– Erel Segal-Halevi
Oct 16 at 5:38
|
show 5 more comments
up vote
6
down vote
accepted
On Windows 10, go to the start menu.
Search and open Recovery Options. The description for it should say System settings.
Under Advanced startup click Restart now.
Click Use a device; it's description should say
"Use a USB drive, network connection, or Windows recovery DVD".Click Ubuntu and hopefully it should take you to the grub boot menu.
Next try going back to the live Ubuntu session on the USB to reinstall
grub-efi
. On the live session, open a terminal and enter the following commands in:
sudo mount /dev/sda# /mnt
Replace the hashtag in
/dev/sda#
with the number representing the partition where you had Ubuntu installed. You can check usinggnome-disks
orgparted
.
sudo mount /dev/sda# /mnt/boot/efi
Replace the hashtag in
/dev/sda#
with the number representing the EFI partition. It's usually/dev/sda2
.
sudo mount -o bind /dev /mnt/dev
sudo mount -o bind /proc /mnt/proc
sudo mount -o bind /sys /mnt/sys
sudo mount -o bind /run /mnt/run
sudo chroot /mnt/
sudo apt-get install --reinstall grub-efi
sudo update-grub
Reboot.
If that fails, go to your BIOS settings with one of the F keys; that option might be Enter setup. Look for boot option priorities and move Ubuntu above the Windows Boot Manager. Go to the option to save the changes then reboot.
Lastly you can try using Boot-Repair.
Thank you. I followed the steps you mentioned. Everything worked except the last steps. I even followed the boot-repair tool tutorial. It still does not work. However, there has been a change! Now when I click onRecovery Options
and eventually selectUbuntu
, GRUB gets loaded and I see more options there. One of the options is Windows now! But when the computer gets restarted I again need to login into Windows and do the same thing to load up GRUB. What should I do?
– Amir
Jan 7 '16 at 22:02
@Amir, try going to the BIOS and make sureubuntu
is 1st on the boot priority list. If you can log-in to ubuntu, try runningsudo update-grub
.
– Enkouyami
Jan 7 '16 at 22:49
I followed steps 1 to 4. Now, in step 5, I do not have an "Ubuntu" option. I have only two options: USB NIC (IPV4) and USB NIC (IPV6). What should I do from here?
– Erel Segal-Halevi
Oct 16 at 5:15
Also, when I try "sudo mount /dev/sda# /mnt/boot/efi", I get an error: "/mnt/boot/efi: mount point does not exist". Indeed, there is no folder "efi" in /mnt/boot - there is a folder "grub".
– Erel Segal-Halevi
Oct 16 at 5:35
1
Also, when I try "sudo apt-get install --reinstall grub-efi" I get an error: "E: Package grub-efi has no installation candidate" (I have Ubuntu 18.04)
– Erel Segal-Halevi
Oct 16 at 5:38
|
show 5 more comments
up vote
6
down vote
accepted
up vote
6
down vote
accepted
On Windows 10, go to the start menu.
Search and open Recovery Options. The description for it should say System settings.
Under Advanced startup click Restart now.
Click Use a device; it's description should say
"Use a USB drive, network connection, or Windows recovery DVD".Click Ubuntu and hopefully it should take you to the grub boot menu.
Next try going back to the live Ubuntu session on the USB to reinstall
grub-efi
. On the live session, open a terminal and enter the following commands in:
sudo mount /dev/sda# /mnt
Replace the hashtag in
/dev/sda#
with the number representing the partition where you had Ubuntu installed. You can check usinggnome-disks
orgparted
.
sudo mount /dev/sda# /mnt/boot/efi
Replace the hashtag in
/dev/sda#
with the number representing the EFI partition. It's usually/dev/sda2
.
sudo mount -o bind /dev /mnt/dev
sudo mount -o bind /proc /mnt/proc
sudo mount -o bind /sys /mnt/sys
sudo mount -o bind /run /mnt/run
sudo chroot /mnt/
sudo apt-get install --reinstall grub-efi
sudo update-grub
Reboot.
If that fails, go to your BIOS settings with one of the F keys; that option might be Enter setup. Look for boot option priorities and move Ubuntu above the Windows Boot Manager. Go to the option to save the changes then reboot.
Lastly you can try using Boot-Repair.
On Windows 10, go to the start menu.
Search and open Recovery Options. The description for it should say System settings.
Under Advanced startup click Restart now.
Click Use a device; it's description should say
"Use a USB drive, network connection, or Windows recovery DVD".Click Ubuntu and hopefully it should take you to the grub boot menu.
Next try going back to the live Ubuntu session on the USB to reinstall
grub-efi
. On the live session, open a terminal and enter the following commands in:
sudo mount /dev/sda# /mnt
Replace the hashtag in
/dev/sda#
with the number representing the partition where you had Ubuntu installed. You can check usinggnome-disks
orgparted
.
sudo mount /dev/sda# /mnt/boot/efi
Replace the hashtag in
/dev/sda#
with the number representing the EFI partition. It's usually/dev/sda2
.
sudo mount -o bind /dev /mnt/dev
sudo mount -o bind /proc /mnt/proc
sudo mount -o bind /sys /mnt/sys
sudo mount -o bind /run /mnt/run
sudo chroot /mnt/
sudo apt-get install --reinstall grub-efi
sudo update-grub
Reboot.
If that fails, go to your BIOS settings with one of the F keys; that option might be Enter setup. Look for boot option priorities and move Ubuntu above the Windows Boot Manager. Go to the option to save the changes then reboot.
Lastly you can try using Boot-Repair.
edited Apr 22 at 0:58
David Foerster
27.6k1364109
27.6k1364109
answered Jan 7 '16 at 5:37
Enkouyami
4591520
4591520
Thank you. I followed the steps you mentioned. Everything worked except the last steps. I even followed the boot-repair tool tutorial. It still does not work. However, there has been a change! Now when I click onRecovery Options
and eventually selectUbuntu
, GRUB gets loaded and I see more options there. One of the options is Windows now! But when the computer gets restarted I again need to login into Windows and do the same thing to load up GRUB. What should I do?
– Amir
Jan 7 '16 at 22:02
@Amir, try going to the BIOS and make sureubuntu
is 1st on the boot priority list. If you can log-in to ubuntu, try runningsudo update-grub
.
– Enkouyami
Jan 7 '16 at 22:49
I followed steps 1 to 4. Now, in step 5, I do not have an "Ubuntu" option. I have only two options: USB NIC (IPV4) and USB NIC (IPV6). What should I do from here?
– Erel Segal-Halevi
Oct 16 at 5:15
Also, when I try "sudo mount /dev/sda# /mnt/boot/efi", I get an error: "/mnt/boot/efi: mount point does not exist". Indeed, there is no folder "efi" in /mnt/boot - there is a folder "grub".
– Erel Segal-Halevi
Oct 16 at 5:35
1
Also, when I try "sudo apt-get install --reinstall grub-efi" I get an error: "E: Package grub-efi has no installation candidate" (I have Ubuntu 18.04)
– Erel Segal-Halevi
Oct 16 at 5:38
|
show 5 more comments
Thank you. I followed the steps you mentioned. Everything worked except the last steps. I even followed the boot-repair tool tutorial. It still does not work. However, there has been a change! Now when I click onRecovery Options
and eventually selectUbuntu
, GRUB gets loaded and I see more options there. One of the options is Windows now! But when the computer gets restarted I again need to login into Windows and do the same thing to load up GRUB. What should I do?
– Amir
Jan 7 '16 at 22:02
@Amir, try going to the BIOS and make sureubuntu
is 1st on the boot priority list. If you can log-in to ubuntu, try runningsudo update-grub
.
– Enkouyami
Jan 7 '16 at 22:49
I followed steps 1 to 4. Now, in step 5, I do not have an "Ubuntu" option. I have only two options: USB NIC (IPV4) and USB NIC (IPV6). What should I do from here?
– Erel Segal-Halevi
Oct 16 at 5:15
Also, when I try "sudo mount /dev/sda# /mnt/boot/efi", I get an error: "/mnt/boot/efi: mount point does not exist". Indeed, there is no folder "efi" in /mnt/boot - there is a folder "grub".
– Erel Segal-Halevi
Oct 16 at 5:35
1
Also, when I try "sudo apt-get install --reinstall grub-efi" I get an error: "E: Package grub-efi has no installation candidate" (I have Ubuntu 18.04)
– Erel Segal-Halevi
Oct 16 at 5:38
Thank you. I followed the steps you mentioned. Everything worked except the last steps. I even followed the boot-repair tool tutorial. It still does not work. However, there has been a change! Now when I click on
Recovery Options
and eventually select Ubuntu
, GRUB gets loaded and I see more options there. One of the options is Windows now! But when the computer gets restarted I again need to login into Windows and do the same thing to load up GRUB. What should I do?– Amir
Jan 7 '16 at 22:02
Thank you. I followed the steps you mentioned. Everything worked except the last steps. I even followed the boot-repair tool tutorial. It still does not work. However, there has been a change! Now when I click on
Recovery Options
and eventually select Ubuntu
, GRUB gets loaded and I see more options there. One of the options is Windows now! But when the computer gets restarted I again need to login into Windows and do the same thing to load up GRUB. What should I do?– Amir
Jan 7 '16 at 22:02
@Amir, try going to the BIOS and make sure
ubuntu
is 1st on the boot priority list. If you can log-in to ubuntu, try running sudo update-grub
.– Enkouyami
Jan 7 '16 at 22:49
@Amir, try going to the BIOS and make sure
ubuntu
is 1st on the boot priority list. If you can log-in to ubuntu, try running sudo update-grub
.– Enkouyami
Jan 7 '16 at 22:49
I followed steps 1 to 4. Now, in step 5, I do not have an "Ubuntu" option. I have only two options: USB NIC (IPV4) and USB NIC (IPV6). What should I do from here?
– Erel Segal-Halevi
Oct 16 at 5:15
I followed steps 1 to 4. Now, in step 5, I do not have an "Ubuntu" option. I have only two options: USB NIC (IPV4) and USB NIC (IPV6). What should I do from here?
– Erel Segal-Halevi
Oct 16 at 5:15
Also, when I try "sudo mount /dev/sda# /mnt/boot/efi", I get an error: "/mnt/boot/efi: mount point does not exist". Indeed, there is no folder "efi" in /mnt/boot - there is a folder "grub".
– Erel Segal-Halevi
Oct 16 at 5:35
Also, when I try "sudo mount /dev/sda# /mnt/boot/efi", I get an error: "/mnt/boot/efi: mount point does not exist". Indeed, there is no folder "efi" in /mnt/boot - there is a folder "grub".
– Erel Segal-Halevi
Oct 16 at 5:35
1
1
Also, when I try "sudo apt-get install --reinstall grub-efi" I get an error: "E: Package grub-efi has no installation candidate" (I have Ubuntu 18.04)
– Erel Segal-Halevi
Oct 16 at 5:38
Also, when I try "sudo apt-get install --reinstall grub-efi" I get an error: "E: Package grub-efi has no installation candidate" (I have Ubuntu 18.04)
– Erel Segal-Halevi
Oct 16 at 5:38
|
show 5 more comments
up vote
2
down vote
I'm presuming GRUB successfully installed, but something is clearly amiss. I know you said you already tried bcdedit, but here's the command to set it: bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
. If you set this and could not boot, as you have indicated already, don't forget to rescind the change you made using bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi
.
Try following the steps detailed in Enkouyami's answer (i.e. chrooting into your installed Ubuntu system from the live CD and then reinstalling grub manually).
If the above fail, you could try installing grub2win. This allows you to boot grub2 from your Windows EFI firmware by making edits to the boot code. Be sure to follow the instructions carefully on the project's page if taking choosing method.
Another method instead of grub2win is Super Grub2 Disk, which is a live CD that allows you to boot into a variety of operating systems. I would try this first instead of grub2win, as there is less risk involved if something goes awry. I have not used Super Grub2 Disk personally, but I hear it is an incredibly useful tool. Using this tool, you can restore grub by following the instructions here.
add a comment |
up vote
2
down vote
I'm presuming GRUB successfully installed, but something is clearly amiss. I know you said you already tried bcdedit, but here's the command to set it: bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
. If you set this and could not boot, as you have indicated already, don't forget to rescind the change you made using bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi
.
Try following the steps detailed in Enkouyami's answer (i.e. chrooting into your installed Ubuntu system from the live CD and then reinstalling grub manually).
If the above fail, you could try installing grub2win. This allows you to boot grub2 from your Windows EFI firmware by making edits to the boot code. Be sure to follow the instructions carefully on the project's page if taking choosing method.
Another method instead of grub2win is Super Grub2 Disk, which is a live CD that allows you to boot into a variety of operating systems. I would try this first instead of grub2win, as there is less risk involved if something goes awry. I have not used Super Grub2 Disk personally, but I hear it is an incredibly useful tool. Using this tool, you can restore grub by following the instructions here.
add a comment |
up vote
2
down vote
up vote
2
down vote
I'm presuming GRUB successfully installed, but something is clearly amiss. I know you said you already tried bcdedit, but here's the command to set it: bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
. If you set this and could not boot, as you have indicated already, don't forget to rescind the change you made using bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi
.
Try following the steps detailed in Enkouyami's answer (i.e. chrooting into your installed Ubuntu system from the live CD and then reinstalling grub manually).
If the above fail, you could try installing grub2win. This allows you to boot grub2 from your Windows EFI firmware by making edits to the boot code. Be sure to follow the instructions carefully on the project's page if taking choosing method.
Another method instead of grub2win is Super Grub2 Disk, which is a live CD that allows you to boot into a variety of operating systems. I would try this first instead of grub2win, as there is less risk involved if something goes awry. I have not used Super Grub2 Disk personally, but I hear it is an incredibly useful tool. Using this tool, you can restore grub by following the instructions here.
I'm presuming GRUB successfully installed, but something is clearly amiss. I know you said you already tried bcdedit, but here's the command to set it: bcdedit /set {bootmgr} path EFIubuntugrubx64.efi
. If you set this and could not boot, as you have indicated already, don't forget to rescind the change you made using bcdedit /deletevalue {bootmgr} path EFIubuntugrubx64.efi
.
Try following the steps detailed in Enkouyami's answer (i.e. chrooting into your installed Ubuntu system from the live CD and then reinstalling grub manually).
If the above fail, you could try installing grub2win. This allows you to boot grub2 from your Windows EFI firmware by making edits to the boot code. Be sure to follow the instructions carefully on the project's page if taking choosing method.
Another method instead of grub2win is Super Grub2 Disk, which is a live CD that allows you to boot into a variety of operating systems. I would try this first instead of grub2win, as there is less risk involved if something goes awry. I have not used Super Grub2 Disk personally, but I hear it is an incredibly useful tool. Using this tool, you can restore grub by following the instructions here.
edited Oct 27 at 13:06
terdon♦
63.9k12135212
63.9k12135212
answered Mar 2 at 20:56
Saul Kapruac
1463
1463
add a comment |
add a comment |
up vote
2
down vote
I have read many answers and tried accordingly but the problem was still there, so I decided to do it myself as follows:
- Click the Start menu and select Settings.
- Select UPDATE & SECURITY.
- Click Recovery.
Under Advanced startup, click the Restart now button. The system will restart and show the Windows 10 boot menu.
Select Troubleshoot.
Choose Advanced options.
Select UEFI Firmware Settings.
Click Restart to restart the system and enter UEFI (BIOS) setup utility.
F10 BIOS setup -> System Configuration tab ->
Boot Options -> OS Boot Manager ->
Ubuntu -> (select the Ubuntu option and move this option up to the top of the list) ->
F10 Save and Exit (press F10 to save Ubuntu as the default boot option) ->
F10 (press F10 again to save the changes to the BIOS/UEFI setup utility)
When the computer restarts, the Ubuntu boot menu will be shown.
1
Welcome to Ask Ubuntu. I posted a low quality BIOS screen photo because it was the only photo I had. If you have a more accurate BIOS photo please provide a link to it in a comment and I will embed the new photo into your answer.
– karel
Dec 1 at 4:09
add a comment |
up vote
2
down vote
I have read many answers and tried accordingly but the problem was still there, so I decided to do it myself as follows:
- Click the Start menu and select Settings.
- Select UPDATE & SECURITY.
- Click Recovery.
Under Advanced startup, click the Restart now button. The system will restart and show the Windows 10 boot menu.
Select Troubleshoot.
Choose Advanced options.
Select UEFI Firmware Settings.
Click Restart to restart the system and enter UEFI (BIOS) setup utility.
F10 BIOS setup -> System Configuration tab ->
Boot Options -> OS Boot Manager ->
Ubuntu -> (select the Ubuntu option and move this option up to the top of the list) ->
F10 Save and Exit (press F10 to save Ubuntu as the default boot option) ->
F10 (press F10 again to save the changes to the BIOS/UEFI setup utility)
When the computer restarts, the Ubuntu boot menu will be shown.
1
Welcome to Ask Ubuntu. I posted a low quality BIOS screen photo because it was the only photo I had. If you have a more accurate BIOS photo please provide a link to it in a comment and I will embed the new photo into your answer.
– karel
Dec 1 at 4:09
add a comment |
up vote
2
down vote
up vote
2
down vote
I have read many answers and tried accordingly but the problem was still there, so I decided to do it myself as follows:
- Click the Start menu and select Settings.
- Select UPDATE & SECURITY.
- Click Recovery.
Under Advanced startup, click the Restart now button. The system will restart and show the Windows 10 boot menu.
Select Troubleshoot.
Choose Advanced options.
Select UEFI Firmware Settings.
Click Restart to restart the system and enter UEFI (BIOS) setup utility.
F10 BIOS setup -> System Configuration tab ->
Boot Options -> OS Boot Manager ->
Ubuntu -> (select the Ubuntu option and move this option up to the top of the list) ->
F10 Save and Exit (press F10 to save Ubuntu as the default boot option) ->
F10 (press F10 again to save the changes to the BIOS/UEFI setup utility)
When the computer restarts, the Ubuntu boot menu will be shown.
I have read many answers and tried accordingly but the problem was still there, so I decided to do it myself as follows:
- Click the Start menu and select Settings.
- Select UPDATE & SECURITY.
- Click Recovery.
Under Advanced startup, click the Restart now button. The system will restart and show the Windows 10 boot menu.
Select Troubleshoot.
Choose Advanced options.
Select UEFI Firmware Settings.
Click Restart to restart the system and enter UEFI (BIOS) setup utility.
F10 BIOS setup -> System Configuration tab ->
Boot Options -> OS Boot Manager ->
Ubuntu -> (select the Ubuntu option and move this option up to the top of the list) ->
F10 Save and Exit (press F10 to save Ubuntu as the default boot option) ->
F10 (press F10 again to save the changes to the BIOS/UEFI setup utility)
When the computer restarts, the Ubuntu boot menu will be shown.
edited Dec 6 at 23:50
karel
56k11124142
56k11124142
answered Dec 1 at 1:45
abchen2015
212
212
1
Welcome to Ask Ubuntu. I posted a low quality BIOS screen photo because it was the only photo I had. If you have a more accurate BIOS photo please provide a link to it in a comment and I will embed the new photo into your answer.
– karel
Dec 1 at 4:09
add a comment |
1
Welcome to Ask Ubuntu. I posted a low quality BIOS screen photo because it was the only photo I had. If you have a more accurate BIOS photo please provide a link to it in a comment and I will embed the new photo into your answer.
– karel
Dec 1 at 4:09
1
1
Welcome to Ask Ubuntu. I posted a low quality BIOS screen photo because it was the only photo I had. If you have a more accurate BIOS photo please provide a link to it in a comment and I will embed the new photo into your answer.
– karel
Dec 1 at 4:09
Welcome to Ask Ubuntu. I posted a low quality BIOS screen photo because it was the only photo I had. If you have a more accurate BIOS photo please provide a link to it in a comment and I will embed the new photo into your answer.
– karel
Dec 1 at 4:09
add a comment |
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You can try using the
boot-repair
tool– TheWanderer
Jan 7 '16 at 2:14
Many Acer laptops need a UEFI update, and all Acer laptops need you to enable "trust" from within UEFI on the Ubuntu/grub UEFI boot entries. askubuntu.com/questions/597213 Acer Aspire E15 will not dual boot, many details Trust settings in step 35 of this answer: askubuntu.com/questions/627416/…
– karel
Dec 6 at 23:41