我正在运行 fsck 并收到“ext2fs_open2：超级块中的错误幻数”

Question

我正在跑步：

fsck -n /dev/sdb2

并且我得到：

fsck from util-linux 2.31.1
e2fsck 1.44.1 (24-Mar-2018)
ext2fs_open2: Bad magic number in super-block
fsck.ext2: Superblock invalid, trying backup blocks...
fsck.ext2: Bad magic number in super-block while trying to open /dev/sdb2

The superblock could not be read or does not describe a valid ext2/ext3/ext4
filesystem.  If the device is valid and it really contains an ext2/ext3/ext4
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>
 or
    e2fsck -b 32768 <device>

有什么建议吗？分区出了什么问题，我该怎么办？

根据要求提供额外信息：

sudo fdisk -l

输出：

Device        Start      End  Sectors  Size Type
/dev/sdb1  32335872 60061695 27725824 13.2G Microsoft basic data
/dev/sdb2      2048     4095     2048    1M BIOS boot
/dev/sdb3      4096   503807   499712  244M EFI System
/dev/sdb4    503808  4610047  4106240    2G Linux filesystem
/dev/sdb5   4610048 32335871 27725824 13.2G Linux filesystem

Answer 1

您fsck在错误的分区（sdb2）上执行了此操作。

sudo fdisk -l向我们展示以下分区是“Linux 文件系统”...

/dev/sdb4    503808  4610047  4106240    2G Linux filesystem
/dev/sdb5   4610048 32335871 27725824 13.2G Linux filesystem

以下是您应该使用的命令...

在“尝试 Ubuntu”模式下启动至 Ubuntu Live DVD/USB。

打开terminal应用程序并输入：

sudo fsck -f /dev/sdb4
sudo fsck -f /dev/sdb5
reboot