v9.5

- DietPi-Software/FS_partition_resize | Sync write buffer to disk before reboots, when we just did some important updates or changes. A proper shutdown sequence implies this, but just do it as failsafe step: #6827 (comment)

dietpi/dietpi-software

@@ -14422,7 +14422,7 @@ _EOF_
 			# Create a persistent flag to not repeat G_AGDUG and rule out a reboot loop when kernel modules remain missing
 			G_EXEC eval '> /boot/dietpi/.skip_distro_upgrade'
 			# Perform a reboot if required as of missing kernel modules
-			G_CHECK_KERNEL || { G_DIETPI-NOTIFY 2 'A reboot is done to finalise the kernel upgrade'; reboot; }
+			G_CHECK_KERNEL || { G_DIETPI-NOTIFY 2 'A reboot is done to finalise the kernel upgrade'; sync; reboot; }
 		fi
 
 		# Global PW

rootfs/etc/systemd/system/ifupdown-pre.service.d/dietpi.conf

@@ -1,4 +1,4 @@
-# Assure that ifupdown-pre always waits for udev to settle: https://dietpi.com/forum/t/dietpi-8-2-2-wireguard-doesnt-start-after-reboot/6415/28
+# Assure that ifupdown-pre always waits for udev to settle: https://dietpi.com/forum/t/6415/28
 # Assure it finishes before ifup@.service instances start: https://github.com/MichaIng/DietPi/issues/6951
 [Unit]
 Wants=network-pre.target

rootfs/var/lib/dietpi/services/fs_partition_resize.sh

@@ -9,6 +9,7 @@
 		> /dietpi_skip_partition_resize
 		systemctl enable dietpi-fs_partition_resize
 		echo '[ INFO ] Rebooting to load the new partition table'
+		sync
 		reboot
 		exit 0
 	}
@@ -117,7 +118,7 @@
 
 	# Maximise root filesystem if type is supported
 	case $ROOT_FSTYPE in
-		'ext'[234]) resize2fs "$ROOT_DEV" || reboot;; # Reboot if resizing fails: https://github.com/MichaIng/DietPi/issues/6149
+		'ext'[234]) resize2fs "$ROOT_DEV" || REBOOT=1;; # Reboot if resizing fails: https://github.com/MichaIng/DietPi/issues/6149
 		'f2fs')
 			mount -o remount,ro /
 			resize.f2fs "$ROOT_DEV"
@@ -131,7 +132,7 @@
 	esac
 
 	# Reboot if needed
-	(( $REBOOT )) && reboot
+	(( $REBOOT )) && { sync; reboot; }
 
 	exit "$EXIT_CODE"
 }