@axt thank you for the update. But the problem is my BIOS has now become read only. Earlier last year, I tried to upgrade ubuntu from 17 to 19 and since then the BIOS has become read only. If I make any changes it will not get saved. That's my main issue. I cannot boot from USB, I cannot boot from DVD etc..
My default first boot device is Ubuntu and then windows and then USB and network.. etc.. Even if I do f12 and select boot from USB it doesn't work. @axt I even tried flashing the BIOS it does not boot from my Pen drive. I downloaded the latest version of UEFI as per BIOS Update for Windows 7 (32-bit, 64-bit), Windows 8 (64-bit) , Windows 8.1 (64-bit), Windows10 (64-bit) - Lenovo Z40-70, Z50-70 and tried to execute the package from windows 8 os but after reboot nothing happens. the Bios version is not changed and the bios is still not saving any changes what ever changes I do in it. now I have removed the ubuntu and deleted few partitations of Linux using partition magic. but now the system partition where the UEFI files are there is still there. Last night I tried to run pratation magic. Assigned a drive letter to the system partation then using powershell with admin rights I tried to replace the grubx64.efi.signed in UEFI folder under Ubuntu but it didn't work Now I have removed the Ubuntu folder from that partition and now it directly boots to windows as soon as I start my laptop but my main concern is to fix the BIOS which is not saving my changes in it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1734147 Title: corrupted BIOS due to Intel SPI bug in kernel To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1734147/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
