Good Afternoon. A very long time lurker, first time poster; and not really technically capable; please be patient.
What I did: updated my system using the stable update of 5-14-2025; resulting in Grub (I do have a legacy Bios, not UEFI) losing the Windows 7 boot options. My mucking around got the Win7 options back in Grub, but lost the Manjaro entries.
What I did to try to fix it:
Read through the update announcements and links to the Grub changes and the post by @vilmil of a similar problem with Windows 8. I am not as technically capable as @vilmil so…
I Tried to use the fallback entries (i have both 5.10 and 5.15 loaded) in Grub to roll back the changes; but in loading the fallback version and rebooting, the Windows 7 option is still missing. Perhaps i am misunderstanding how the fallback options work.
I attempted to use Timeshift to restore the system from before the update. I have diligently used Timeshift to create restore points, but have never actually restored one. Time shift reported success and I rebooted. Now Grub has the Windows 7 boot options, but no Manjaro entries.
I cannot boot to Manjaro anymore. I can get a (GRUB>) prompt at boot; but I don’t know enough to know what to do at that prompt.
Then I updated my Bootable Manjaro USB to research this challenge and spent the last weeks researching tutorials in Grub, Bios, Chroot, how recover from updates and how to post and updates in particular.
I can boot with the USB and SEE the other devices in Nemo. I can see the Grub config file on the hard drive installed version. It appears I need to update that Grub (Grub-update?)file, but an update started this journey.
How do I get from USB booted version of Manjaro to the one I can see in Nemo and repair the Grub? Can this be done from the Grub prompt (Grub>)during boot and I’m overcomplicating things? Did I cause this by not checking the initrmsf <sp?> box in Timeshift when i did the restore?
Thank you, for reading anyway.
In the interest of NOT making things worse
Mod edit:- General tidy of post. Borked template removed.