From 8dfc48ca41226c5a5581746c195b5f8f567a1bb0 Mon Sep 17 00:00:00 2001
From: Kroese <kroese@users.noreply.github.com>
Date: Mon, 22 Jan 2024 12:45:32 +0100
Subject: [PATCH] fix: Set first byte on processed ISOs

---
 src/install.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/install.sh b/src/install.sh
index 3e0d36b..faaca5a 100644
--- a/src/install.sh
+++ b/src/install.sh
@@ -162,6 +162,8 @@ if [ ! -f "$DIR/$ETFS" ] || [ ! -f "$DIR/$EFISYS" ]; then
   else
     warn "failed to locate file 'efisys_noprompt.bin' in ISO image, $FB"
   fi
+  # Mark ISO as prepared
+  printf '\x16' | dd of=$OUT bs=1 seek=0 count=1 conv=notrunc > /dev/null
   mv -f "$ISO" "$STORAGE/$BASE"
   rm -rf "$TMP"
   return 0
@@ -304,6 +306,9 @@ genisoimage -b "$ETFS" -no-emul-boot -c "$CAT" -iso-level 4 -J -l -D -N -joliet-
 
 [ -n "$CUSTOM" ] && rm -f "$STORAGE/$CUSTOM"
 
+# Mark ISO as prepared
+printf '\x16' | dd of=$OUT bs=1 seek=0 count=1 conv=notrunc > /dev/null
+
 mv "$OUT" "$STORAGE/$BASE"
 rm -rf "$TMP"