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I have a dual boot installation on my laptop, I have both Debian 12 and Windows 11 installed. I updated Windows 11 yesterday and my laptop boots directly into Windows after the update, no grub menu is presented.

I am now connected on an Ubuntu live ISO image, I've been trying random things for the past few hours with no luck, can anyone guide me into a tutorial on how to get my grub menu back? Or can someone tell me what I need to do?

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  • So we have a more complete picture. What update exactly was installed? A cumulative update shouldn't have caused a problem with Grub. There are lots of questions about losing access to the Grub menu after a Windows update, have you tried, any of the solutions described by answers to existing questions? What random things have you tried exactly?
    – Ramhound
    Commented Jul 3 at 20:45
  • @Ramhound thank you for your answer. I mounted the partition where I have Linux installed into /mnt and the EFI partition into /mnt/boot, then I did a grub-mkconfig -o /boot/grub/grub.cfg. I rebooted my computer, but I couldn't see any grub menu...
    – Hamza
    Commented Jul 3 at 20:51
  • Edit your question. Those commands are not formatted and impossible to read as a comment
    – Ramhound
    Commented Jul 3 at 21:27
  • Extreme case: I've imaged ext4 partition, reinstalled Ubuntu, and then put back the ext4 partition. Yes, there are simpler ways that might have worked, but that was quicker, for me, than finding and fixing the (likely minor) issue.
    – DrMoishe Pippik
    Commented Jul 3 at 22:54

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