grub repair fails on dual boot

[Bret Busby]

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)
.................