大好的周六同事报出一个问题,说客户机起不来了,第一反应是grub被玩坏了。登录到母机查看,grub完全正常运行。
![](data:image/png;base64,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于是开始直接启动。直接报错:找不到文件。于是可以肯定的是 /boot分区出了问题。直接开启救援模式。
开启救援模式可以尝试使用网络连接。
chroot /mnt/sysimage 切换到系统根目录。
启动ssh服务
service sshd restart 尝试远程连接到主机,运气好就能连接,这次我没连接上。
直接查看boot目录,内核什么的全没了。挂载进行重装内核吧。
mount /dev/cdrom /iso
cd /iso
rpm -ivh --force kernel-2.6.*
然后退出重启,正常进入系统。
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