虚拟机启动centos失败：
sd 0:0:0:0: [sda] assuming drive cache: write through
sd 0:0:0:0: [sda] assuming drive cache: write through
sd 0:0:0:0: [sda] assuming drive cache: write through
piix4_sumbus 0000:00:07.3: Host SMBus controller not enabled!
end_request: I/O error, dev fd0, sector 0
end_request: I/O error, dev fd0, sector 0
本来可以正常用，突然间就卡主了，然后重启，启动过程中报错卡住了，再也启动不起来，有人遇到过吗
sd 0:0:0:0: [sda] assuming drive cache: write through
sd 0:0:0:0: [sda] assuming drive cache: write through
sd 0:0:0:0: [sda] assuming drive cache: write through
piix4_sumbus 0000:00:07.3: Host SMBus controller not enabled!
end_request: I/O error, dev fd0, sector 0
end_request: I/O error, dev fd0, sector 0
本来可以正常用，突然间就卡主了，然后重启，启动过程中报错卡住了，再也启动不起来，有人遇到过吗
