Installed two days ago ubuntu 14.04.1 dual boot beside win 8.1 on a new notebook. All was running well:
- uefi boot
- secure boot
- grub was working well allowing me to choose
- was able to start to ubuntu
- was able to start to windows
Yesterday I installed OEM updates including a bios update. After that these updates grub is gone. No menu option any more. only boot to windows works. With boot options I'm able to boot /EFI/ubuntu/shim64.efi may anyway windows starts. I also tried to move the EFI ubuntu entry on the first place in BIOS. No way. I've started with LiveCD, mounted the partition with the EFI staff on it and tried to copy the entire file system to a different disk as reference and backup. Copy worked for all files except:
- /EFI/ubuntu/shimx64.efi
- /EFI/ubuntu/grubx64.efi
Both files can't be copied, or better to say only 4K of them. Then the copy process ends with a error message (don't remember, sorry).
So for me it looks like that something has corrupted my two ubuntu efi files!
Does someone has an idea, how to fix those?
- uefi boot
- secure boot
- grub was working well allowing me to choose
- was able to start to ubuntu
- was able to start to windows
Yesterday I installed OEM updates including a bios update. After that these updates grub is gone. No menu option any more. only boot to windows works. With boot options I'm able to boot /EFI/ubuntu/shim64.efi may anyway windows starts. I also tried to move the EFI ubuntu entry on the first place in BIOS. No way. I've started with LiveCD, mounted the partition with the EFI staff on it and tried to copy the entire file system to a different disk as reference and backup. Copy worked for all files except:
- /EFI/ubuntu/shimx64.efi
- /EFI/ubuntu/grubx64.efi
Both files can't be copied, or better to say only 4K of them. Then the copy process ends with a error message (don't remember, sorry).
So for me it looks like that something has corrupted my two ubuntu efi files!
Does someone has an idea, how to fix those?
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