我最近有一个损坏的 ext4 文件系统抛出这些错误：
kubuntu@kubuntu:~$ sudo mount -t ext4 /dev/sdc2 c1
mount: wrong fs type, bad option, bad superblock on /dev/sdc2,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
kubuntu@kubuntu:~$ sudo fsck.ext4 -v /dev/sdc2
e2fsck 1.42.5 (29-Jul-2012)
fsck.ext4: Attempt to read block from filesystem resulted in short read while trying to open /dev/sdc2
Could this be a zero-length partition?
kubuntu@kubuntu:~$ dmesg | tail …