Gparted 信息和警告：
<i>Filesystem volume name: <none>
Last mounted on: /i-data/f128dac5
Filesystem UUID: c2f55399-a8ab-400b-a144-d605ceb58c9d
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags: unsigned_directory_hash
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 122068992
Block count: 488249472
Reserved block count: 0
Free blocks: 480389347
Free inodes: 122066932
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 907
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Fri May 25 16:45:58 2012
Last mount time: Wed Dec 31 17:14:27 2014
Last write time: Wed Dec 31 17:29:55 2014
Mount count: 369
Maximum mount count: 21
Last checked: Fri May 25 16:58:00 2012
Check interval: 15552000 (6 months)
Next check after: Wed Nov 21 15:58:00 2012
Lifetime writes: 2351 GB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
Default directory hash: half_md4
Directory Hash Seed: bc641083-df73-4c0a-8560-ac502897cba0
Journal backup: inode blocks</i>
<i>dumpe2fs 1.42.12 (29-Aug-2014)
dumpe2fs: A block group is missing an inode table while reading journal inode</i>
<i>Unable to read the contents of this file system!
Because of this some operations may be unavailable.
The cause might be a missing software package.
The following list of software packages is required for ext4 file system support: e2fsprogs v1.41+.</i>
e2fsprogs已安装，版本为1.42。它在 Debian 8.3 上。
答案1
首先，如果您没有mdadm（手册页）已安装，您需要立即安装：
sudo apt-get install mdadm
假设驱动器的名称是/dev/sdx，我们对第二个分区感兴趣，假设系统上已经有一些阵列，因此我们将其命名为/dev/md9，我们按如下方式组装单驱动器阵列：
sudo mdadm --assemble --force /dev/md9 /dev/sdx2
如果一切顺利，请为安装点创建一些目录，例如：
sudo mkdir --mode=755 /mnt/zyxelnas
最后按如下方式挂载：
sudo mount /dev/md9 /mnt/zyxelnas