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Linux下UEFI引导修复
source link: https://blog.bluexiii.com/202101/Linux%E4%B8%8BUEFI%E5%BC%95%E5%AF%BC%E4%BF%AE%E5%A4%8D/
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Linux下UEFI引导修复
Posted on
2021-01-05
某曙光服务器，在主板CMOS电池掉电后，NVRAM信息丢失。重新开机后，无法自动从SATA0硬盘的EFI分区的/EFI/boot/bootx64.efi进行引导。需要用启动盘进入恢复模式，将引导项重新写入NVRAM。
# 挂EFI分区，已经进入系统时则不需要
fdisk -l /dev/sda
mount /dev/sda1 /boot/efi/
# 查看引导项
efibootmgr -v
# 删除引导项
efibootmgr -b 0001 -B
# 添加引导项
efibootmgr -c -d /dev/sda -p 1 -l '\EFI\centos\grubx64.efi' -L CentOS
efibootmgr -c -d /dev/sda -p 1 -l '\EFI\debian\grubx64.efi' -L Debian
-c 创建引导项
-d 选择硬盘
–p 选择分区
-l efi文件路径
-L 引导项标签
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