DESCRIPTION
 fastboot and 
fasthalt are shell scripts which reboot or halt the system, and when next started, the system will skip the normal the file systems checks. This is done by creating a file 
/fastboot, then invoking the 
reboot(8) program. The system startup script, 
/etc/rc, looks for this file and, if present, skips the normal invocation of 
fsck(8).