From 103fecb133540f21da658187fb492c16f931f754 Mon Sep 17 00:00:00 2001
From: jumperfly <jumperfly@users.noreply.github.com>
Date: Sat, 19 Nov 2016 02:45:35 +0000
Subject: [PATCH] Remove old backup OS image before moving new OS image to
 reduce disk space requirements.

---
 src/init | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/init b/src/init
index 49727e3..14b8ef6 100755
--- a/src/init
+++ b/src/init
@@ -42,6 +42,9 @@ if findfs $NEWIMG_DEVICE &> /dev/null; then
 		# Mount device containing current image RW and replace with updated image
 		echo "Detected a new OS image, copying to image partition..."
 		mount -t ext4 $IMG_DEVICE /mnt/img
+		if [[ -e /mnt/img/$OS_IMAGE-old ]]; then
+			rm -f /mnt/img/$OS_IMAGE-old
+		fi
 		mv -f /mnt/newimg/$OS_IMAGE /mnt/img/$OS_IMAGE-new
 		mv -f /mnt/img/$OS_IMAGE /mnt/img/$OS_IMAGE-old
 		mv /mnt/img/$OS_IMAGE-new /mnt/img/$OS_IMAGE