FreeBSD断电后，自动检测并修复文件系统

FreeBSD断电后，自动检测并修复文件系统

在rc.conf里添加如下代码

#fix filesystem
fsck_y_enable="YES"      # Set to YES to do fsck -y if the initial preen fails.
background_fsck="NO"     # Attempt to run fsck in the background where possible.