diff --git a/Linux_reinstall/Ubuntu/ubuntuInit.sh b/Linux_reinstall/Ubuntu/ubuntuInit.sh
index 3189359..89c8fe3 100644
--- a/Linux_reinstall/Ubuntu/ubuntuInit.sh
+++ b/Linux_reinstall/Ubuntu/ubuntuInit.sh
@@ -50,7 +50,6 @@ targetLinuxMirror=$(grep "targetLinuxMirror" $confFile | awk '{print $2}')
 targetLinuxSecurityMirror=$(grep "targetLinuxSecurityMirror" $confFile | awk '{print $2}')
 cloudInitUrl=$(grep "cloudInitUrl" $confFile | awk '{print $2}')
 setFail2banStatus=$(grep "setFail2banStatus" $confFile | awk '{print $2}')
-serialConsolePropertiesForGrub=$(grep "serialConsolePropertiesForGrub" $confFile | sed -e 's/serialConsolePropertiesForGrub  //g')
 
 # Reset configurations of repositories.
 true >/etc/apk/repositories
@@ -126,12 +125,6 @@ echo 'datasource_list: [ NoCloud, None ]' >/mnt/etc/cloud/cloud.cfg.d/90_dpkg.cf
 	sed -ri 's/ro net.ifnames=0 biosdevname=0/ro net.ifnames=0 biosdevname=0 ipv6.disable=1/g' /mnt/boot/grub/grub.cfg
 }
 
-# Replace serial console parameters.
-[[ -n "$serialConsolePropertiesForGrub" && $(echo "$serialConsolePropertiesForGrub" | grep "ttyAMA[0-9]") ]] && {
-	sed -ri 's/console=tty1 console=ttyS0/'$serialConsolePropertiesForGrub'/g' /mnt/etc/default/grub.d/50-cloudimg-settings.cfg
-	sed -ri 's/console=tty1 console=ttyS0/'$serialConsolePropertiesForGrub'/g' /mnt/boot/grub/grub.cfg
-}
-
 # Permit root user login by password, change ssh port.
 sed -ri 's/^#?PermitRootLogin.*/PermitRootLogin yes/g' /mnt/etc/ssh/sshd_config
 sed -ri 's/^#?PasswordAuthentication.*/PasswordAuthentication yes/g' /mnt/etc/ssh/sshd_config