failsafe_wait() {
FAILSAFE=
- grep 'failsafe=' /proc/cmdline > /dev/null && FAILSAFE=true && export FAILSAFE
+ grep -q 'failsafe=' /proc/cmdline && FAILSAFE=true && export FAILSAFE
if [ "$FAILSAFE" != "true" ]; then
preinit_net_echo "Please press button now to enter failsafe"
echo -n "Press "