blk_update_request: I/O error, dev fd0, sector 0
CentOS Linux system console output above information, the solution:
When the system starts to enter the bios
Advanced -> I / O Device Configuration -> Floppy disk controller -> [Enabled] to [Disabled]
remember F10 saved.
Because there is no floppy disk, a floppy disk drive to load at system startup.
[root@db01 ~]# lsmod | grep -i floppy
[root@db01 ~]#
The module can not confirm floppy enabled.