OS-Ubuntu-Grub-开机后引导丢失

OS-Ubuntu-Grub-开机后引导丢失

现象

Ubuntu系统启动后提示：

GNU GRUB version 2.02
Minimal BASH-like line editing is supported. 
For the first word. 
TAB lists possible command completions. 
Anywhere else TAB lists possible device or file completions.

grub>

解决方案

1. ls:显示分区
2. set:显示当前grub设置

• prefix=(hd0,gpt1)/boot/grub/grub.cfg
• root=hd0,gpt1

3. search -f /boot/grub:搜索grub位置
4. set prefix=xx;set root=xx:重置grub
5. set:查看配置
6. insmod normal:载入normal模组
7. normal:激活normal模组
8. update-grub
9. grub-install /dev/sda:更新grub，写入指定硬盘