在VMWARE虚拟机下安装RHEL7.0，启动时有以下提示。经网上搜索，答复为floppy及piix4_smbus设备加载时找不到设备所致。
解决办法如下：
floppy，在BIOS里禁用软驱，重启
piix4_smbus，先检查一下是否有加载piix4，如有把i2c_piix4加入黑名单，启动时不加载此模块
# lsmod | grep i2c_piix4
# vi /etc/modprobe.d/blacklist.conf
blacklist i2c_piix4
其他的方法可参考
Added
- blacklist floppy
to
/etc/modprobe.d/blacklist.conf
and rebooted
Added
- alias floppy off
to
/etc/modprobe.conf
and rebooted
disable the floppy kernel module by doing this:
- echo "blacklist floppy" | sudo tee /etc/modprobe.d/nofloppy.conf
The only real solution is to disable the floppy driven in your vm‘s BIOS (as mentioned by gerald_clark)
官方文档的方法：
Boot pauses probing floppy device
On some machines (mostly laptops with removable floppy drives), boot will pause while the (non-existant) floppy device is probed. A series of the following messages will appear:
end_request: I/O error, dev fd0, sector 0end_request: I/O error, dev fd0, sector 0Buffer I/O error on device fd0, logical block 0
This is caused by initrd‘s nash searching for filesystem labels on the floppy device. This problem can be avoided by adding floppy.allowed_drive_mask=0 to the kernel boot options.