/usr/share/initramfs-tools/scripts/init-top
#!/bin/sh -e
PREREQS="all_generic_ide blacklist"
prereqs() { echo "$PREREQS"; }
case "$1" in
prereqs)
prereqs
exit 0
;;
esac
echo > /sys/kernel/uevent_helper
/lib/systemd/systemd-udevd --daemon --resolve-names=never
udevadm trigger --action=add
# Leave udev running to process events that come in out-of-band (like USB
# connections)initramfs中的udev脚本分析
原文：http://blog.csdn.net/oldlinux/article/details/43452543
