umount -l -n /target >/dev/null 2>&1
umount -l -n /dev
+ umount -l -n /run
+ [ -d /sys/firmware/efi/efivars ] && umount -l -n /sys/firmware/efi/efivars
umount -l -n /sys
umount -l -n /proc
mount -n -t proc proc /proc
mount -n -t sysfs sysfs /sys
+if [ -d /sys/firmware/efi ]; then
+ echo "EFI boot mode detected, mounting efivars filesystem"
+ mount -n -t efivarfs efivarfs /sys/firmware/efi/efivars
+fi
+mount -n -t tmpfs tmpfs /run
parse_cmdline