Modifying the Boot File (UEFI Boot Mode)¶
In the UEFI boot mode, you must modify the boot file. Otherwise, BMSs provisioned using the VM image may fail a forcible restart.
After the OS is installed, do not restart the VM immediately. Press Ctrl + Alt + F2 to enter the CLI and perform the operations in this section to modify the boot file.
Note
Startup failure cause and solution: When an image is created from a VM, the boot file in the image may encounter an error due to file format inconsistency. As a result, the BMS created from the image will fail to be forcibly restarted. You need to optimize the GRUB file to rectify this issue.
Relevant to OS or not: The startup failure is irrelevant to the OS. You are advised to optimize the GRUB file for the VMs booted in UEFI mode.
Impact: If no action is taken, it is possible that the BMS startup will fail. As a result, services cannot run on the BMS properly.
Arm¶
Run the find / -name "boot/efi/EFI" command to locate the boot file. Replace boot/efi/EFI/BOOT/BOOTAA64.EFI with boot/efi/EFI/$os_version/grubaa64.efi.
For example, $os_version for CentOS 7.4 is centos. Replace boot/efi/EFI/BOOT/BOOTAA64.EFI with boot/efi/EFI/centos/grubaa64.efi.
The location of grubaa64.efi varies depending on the OS. For details, see Table 1.
OS | grubaa64.efi Location |
|---|---|
CentOS | /boot/efi/EFI/centos/grubaa64.efi |
EulerOS | /boot/efi/EFI/euleros/grubaa64.efi |
SUSE | /boot/efi/EFI/sles/grubaa64.efi |
Ubuntu | /boot/efi/EFI/ubuntu/grubaa64.efi |
Red Hat | /boot/efi/EFI/redhat/grubaa64.efi |
x86¶
Run the find / -name "boot/efi/EFI" command to locate the boot file. For example, the boot file of EulerOS 2.5 is located in /boot/efi/EFI. Replace /boot/efi/EFI/BOOT/BOOTX64.EFI with /boot/efi/EFI/$os_version/grubx64.efi.
For example, $os_version for EulerOS 2.5 is euleros. Replace /boot/efi/EFI/BOOT/BOOTX64.EFI with /boot/efi/EFI/euleros/grubx64.efi.
The location of grubx64.efi varies depending on the OS. For details, see Table 2.
OS | grubx64.efi Location |
|---|---|
CentOS | /boot/efi/EFI/centos/grubx64.efi |
EulerOS | /boot/efi/EFI/euleros/grubx64.efi |
SUSE | /boot/efi/EFI/sles/grubx64.efi |
Ubuntu | /boot/efi/EFI/ubuntu/grubx64.efi |
Red Hat | /boot/efi/EFI/redhat/grubx64.efi |