看来您有坏的超级块。要解决此问题:
首先,启动到实时CD或USB
通过使用找出您的分区号
sudo fdisk -l|grep Linux|grep -Ev 'swap'
然后,使用以下命令列出所有超级块:
sudo dumpe2fs /dev/sda2 | grep superblock
替换sda2
为您的驱动器号
您应该会得到类似的输出
Primary superblock at 0, Group descriptors at 1-6
Backup superblock at 32768, Group descriptors at 32769-32774
Backup superblock at 98304, Group descriptors at 98305-98310
Backup superblock at 163840, Group descriptors at 163841-163846
Backup superblock at 229376, Group descriptors at 229377-229382
Backup superblock at 294912, Group descriptors at 294913-294918
Backup superblock at 819200, Group descriptors at 819201-819206
Backup superblock at 884736, Group descriptors at 884737-884742
Backup superblock at 1605632, Group descriptors at 1605633-1605638
Backup superblock at 2654208, Group descriptors at 2654209-2654214
Backup superblock at 4096000, Group descriptors at 4096001-4096006
Backup superblock at 7962624, Group descriptors at 7962625-7962630
Backup superblock at 11239424, Group descriptors at 11239425-11239430
Backup superblock at 20480000, Group descriptors at 20480001-20480006
Backup superblock at 23887872, Group descriptors at 23887873-23887878
从该列表中选择一个替代超级块,在这种情况下,替代超级块#32768
现在,要使用备用超级块#32768检查和修复Linux文件系统:
sudo fsck -b 32768 /dev/sda2 -y
该-y
标志用于跳过所有Fix?
问题,并通过自动回答全部回答
您应该得到类似的输出:
fsck 1.40.2 (12-Jul-2007)
e2fsck 1.40.2 (12-Jul-2007)
/dev/sda2 was not cleanly unmounted, check forced.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Free blocks count wrong for group #241 (32254, counted=32253).
Fix? yes
Free blocks count wrong for group #362 (32254, counted=32248).
Fix? yes
Free blocks count wrong for group #368 (32254, counted=27774).
Fix? yes
..........
/dev/sda2: ***** FILE SYSTEM WAS MODIFIED *****
/dev/sda2: 59586/30539776 files (0.6% non-contiguous), 3604682/61059048 blocks
现在尝试安装分区
sudo mount /dev/sda2 /mnt
现在,尝试使用以下命令浏览文件系统
cd /mnt
mkdir test
ls -l
cp file /path/to/safe/location
如果能够执行上述命令,则很可能已修复错误。
现在,重新启动计算机,您应该能够正常启动。
(来源)