linux - 用fdisk误删除了当前系统的根目录那个分区，怎么恢复？

Question

写分区表的时候提示重启才能生效，才发现不太对劲…
由于系统正在这个分区上运行，Linux内核尚且认为这个分区存在，但硬盘的分区表中已经不存在这个分区了。
现在还没重启系统，怎么恢复？

Answer 1

Done.
First try to find the offset of this partition;
Then create a partition of the same type as the original but slightly larger in size;
Finally e2fsck -f + resize2fs.

Answer 2

Cannot be restored. Remember that once deleted on Linux, it is an irreversible operation!