Debian boot option removed from Grub after update [closed]

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I updated Windows 10 on my dual-boot machine, and was met with the grub rescue interface. I had to use the normal.mod to get into Grub and boot Debian, but I ran into some problems after running update-grub as suggested.



First, I got the error /usr/sbin/grub-mkconfig: 253: /usr/sbin/grub-mkconfig: cannot create /boot/grub/grub.cfg.new: Directory nonexistent



So I made the directory, ran it and sudo grub-install /dev/sda and when I rebooted, Grub was both an ugly blue colour and the Debian boot option was gone, with only Windows 10 remaining.



I can get into Debian through the same normal.mod method, but why is this happening? How can I get the Debian boot option back on Grub when the machine boots?






boot dual-boot grub2 uefi debian







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closed as off-topic by karel, Thomas Ward♦ Nov 26 at 15:24


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – Thomas Ward

If this question can be reworded to fit the rules in the help center, please edit the question.













  • Possible duplicate of How can I repair grub? (How to get Ubuntu back after installing Windows?)
    – karel
    Nov 26 at 15:24










  • Debian is not Ubuntu, and is not supported here on Ask Ubuntu. Please post Debian questions to our sister site, Unix and Linux
    – Thomas Ward♦
    Nov 26 at 15:24















up vote
-1
down vote

favorite












I updated Windows 10 on my dual-boot machine, and was met with the grub rescue interface. I had to use the normal.mod to get into Grub and boot Debian, but I ran into some problems after running update-grub as suggested.



First, I got the error /usr/sbin/grub-mkconfig: 253: /usr/sbin/grub-mkconfig: cannot create /boot/grub/grub.cfg.new: Directory nonexistent



So I made the directory, ran it and sudo grub-install /dev/sda and when I rebooted, Grub was both an ugly blue colour and the Debian boot option was gone, with only Windows 10 remaining.



I can get into Debian through the same normal.mod method, but why is this happening? How can I get the Debian boot option back on Grub when the machine boots?






boot dual-boot grub2 uefi debian







share|improve this question













closed as off-topic by karel, Thomas Ward♦ Nov 26 at 15:24


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – Thomas Ward

If this question can be reworded to fit the rules in the help center, please edit the question.













  • Possible duplicate of How can I repair grub? (How to get Ubuntu back after installing Windows?)
    – karel
    Nov 26 at 15:24










  • Debian is not Ubuntu, and is not supported here on Ask Ubuntu. Please post Debian questions to our sister site, Unix and Linux
    – Thomas Ward♦
    Nov 26 at 15:24













up vote
-1
down vote

favorite









up vote
-1
down vote

favorite











I updated Windows 10 on my dual-boot machine, and was met with the grub rescue interface. I had to use the normal.mod to get into Grub and boot Debian, but I ran into some problems after running update-grub as suggested.



First, I got the error /usr/sbin/grub-mkconfig: 253: /usr/sbin/grub-mkconfig: cannot create /boot/grub/grub.cfg.new: Directory nonexistent



So I made the directory, ran it and sudo grub-install /dev/sda and when I rebooted, Grub was both an ugly blue colour and the Debian boot option was gone, with only Windows 10 remaining.



I can get into Debian through the same normal.mod method, but why is this happening? How can I get the Debian boot option back on Grub when the machine boots?






boot dual-boot grub2 uefi debian







share|improve this question













I updated Windows 10 on my dual-boot machine, and was met with the grub rescue interface. I had to use the normal.mod to get into Grub and boot Debian, but I ran into some problems after running update-grub as suggested.



First, I got the error /usr/sbin/grub-mkconfig: 253: /usr/sbin/grub-mkconfig: cannot create /boot/grub/grub.cfg.new: Directory nonexistent



So I made the directory, ran it and sudo grub-install /dev/sda and when I rebooted, Grub was both an ugly blue colour and the Debian boot option was gone, with only Windows 10 remaining.



I can get into Debian through the same normal.mod method, but why is this happening? How can I get the Debian boot option back on Grub when the machine boots?






boot dual-boot grub2 uefi debian




boot dual-boot grub2 uefi debian






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 26 at 15:22









Forumpy

1




1




closed as off-topic by karel, Thomas Ward♦ Nov 26 at 15:24


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – Thomas Ward

If this question can be reworded to fit the rules in the help center, please edit the question.




closed as off-topic by karel, Thomas Ward♦ Nov 26 at 15:24


This question appears to be off-topic. The users who voted to close gave this specific reason:


  • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – Thomas Ward

If this question can be reworded to fit the rules in the help center, please edit the question.












  • Possible duplicate of How can I repair grub? (How to get Ubuntu back after installing Windows?)
    – karel
    Nov 26 at 15:24










  • Debian is not Ubuntu, and is not supported here on Ask Ubuntu. Please post Debian questions to our sister site, Unix and Linux
    – Thomas Ward♦
    Nov 26 at 15:24


















  • Possible duplicate of How can I repair grub? (How to get Ubuntu back after installing Windows?)
    – karel
    Nov 26 at 15:24










  • Debian is not Ubuntu, and is not supported here on Ask Ubuntu. Please post Debian questions to our sister site, Unix and Linux
    – Thomas Ward♦
    Nov 26 at 15:24
















Possible duplicate of How can I repair grub? (How to get Ubuntu back after installing Windows?)
– karel
Nov 26 at 15:24




Possible duplicate of How can I repair grub? (How to get Ubuntu back after installing Windows?)
– karel
Nov 26 at 15:24












Debian is not Ubuntu, and is not supported here on Ask Ubuntu. Please post Debian questions to our sister site, Unix and Linux
– Thomas Ward♦
Nov 26 at 15:24




Debian is not Ubuntu, and is not supported here on Ask Ubuntu. Please post Debian questions to our sister site, Unix and Linux
– Thomas Ward♦
Nov 26 at 15:24















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