grub repair fails on dual boot

[aishen at free.fr]

Hi,

I had kind of similar problem last week because I change my pc with a 
new one but asked the maker to use my 2 disk w11/12 canary and ubuntu 
24.04, on a ryzen 9 7900x but I didn't imagine the kinds of problems I 
would have

On web there are some sites which can help . Can you start in ubuntu ?

search dual boot w10 ubuntu .

grep -q "DISABLE_OS_PROBER" /etc/default/grub && sudo sed -i 
's/^#GRUB_DISABLE_OS_PROBER/GRUB_DISABLE_OS_PROBER/' /etc/default/grub 
|| sudo sed -i '/GRUB_CMDLINE_LINUX=/a\GRUB_DISABLE_OS_PROBER=false' 
/etc/default/grub

I tried this from here

https://forum.ubuntu-fr.org/viewtopic.php?id=2083517

I searched for fews days, installing a new ubuntu 24.04 because it's the 
next ubuntu LTS.

You need to know where is your boot if sda or sdb if it's efi... And 
more whitout these I can't help you at the end my problem was really 
stupid fast secure boot false and time to boot from 1 to 5 second to get 
a menu !

but if you can either boot from bios to w10 or ubuntu you can probably 
do it ! Help you with google search

I can't not help you much maybe somesone can. But you need more to know 
about your system

Best



Le 02/04/2024 à 23:07, Bret Busby a écrit :
> On 3/4/24 04:14, ubuntu-users-list at thomas.freit.ag wrote:
>> Hi,
>>
>> after some Windows 10 updates, dual boot (Windows 10 and Ubuntu 
>> 23.10) does not work any more on my Lenovo Ideapad 5. After turning 
>> on, grub does not get invoked and it boots directly into Win 10. This 
>> happens sometimes, booting a USB live system and reinstalling grub 
>> usually works fine. However, this time reinstalling does not work. 
>> After attempted repair, still no grub is loaded on bootup and system 
>> ends in BIOS or boots Win 10 (depending on boot order).
>
> <snip>
>
> Hello.
>
> I am no expert , but, I wonder whether it would be worth trying to 
> perform a new clean install of the Linux OS.
>
> In that, depending on how soon you need to get the Linux installation 
> working, my understanding is that Ubuntu 24.04 LTS is due to be 
> released in about four weeks.
>
> I do not run MS Windows, and, so, do not run Windows 10 updates. From 
> memory, I have read headlines in the Register, indicating that 
> Microsoft released some bodgy and harmful Windows 10 updates, whereby 
> updated Windows 10 changed its usefulness to the boat anchor grade.
>
> Someone more knowledgeable on each of these points, can probably 
> correct or confirm what I have stated/suggested.
>
> ....
> Bret Busby
> Armadale
> Western Australia
> (UTC+0800)
> .................
>
>