Solution
1, restart see if you can repair (many machines possible).
To repair the file system y / dev / hdc6 (/ dev / hdc6 refers you need to fix the partition) - 2, use with fsck.
3. If, during the repair time and some will complain partition, reboot the system the problem remains.
View the next partition structure
[root@localhost ~]# mount
/dev/sda3 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda1 on /boot type ext3 (ro)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
View ro mounted partition, if found to have ro, to re-mount
umount /dev/sda1
mount /dev/sda1 /boot
If you find a prompt "device is busy", to find what is the process of making him busy
fuser -m / boot module will display that uses this pid
fuser -mk / boot will directly kill the pid
Then you can re-mount.
4, direct remount, command
[root@localhost ~]# mount -o rw,remount /boot
This article comes from: https://www.cnblogs.com/wajika/p/6815176.html