v7.7

+ DietPi-Pre-patch | On x86_64 with /boot FAT partition, create kernel upgrade hook to remove existing files from /boot before installing the new files: #4785

.update/pre-patches

@@ -96,5 +96,29 @@ then
 	G_EXEC sed -i '/^Package:/c\Package: openbox* obconf* libob* pcmanfm* libfm* libgtk* lx*' /etc/apt/preferences.d/dietpi-lxde
 fi
 
+# v7.7
+if (( $G_DIETPI_VERSION_CORE < 7 || ( $G_DIETPI_VERSION_CORE == 7 && $G_DIETPI_VERSION_SUB < 7 ) )) [[ $G_HW_ARCH == 10 && $(findmnt -Ufnro FSTYPE -M /boot) == 'vfat' ]]
+then
+	G_DIETPI-NOTIFY 2 'Creating kernel upgrade hook to remove existing files from /boot FAT partition before installing the new files: https://github.com/MichaIng/DietPi/issues/4785'
+	G_EXEC mkdir -p /etc/kernel/preinst.d
+	cat << '_EOF_' > /etc/kernel/preinst.d/dietpi
+#!/bin/sh -e
+# Remove old kernel files if existing: https://github.com/MichaIng/DietPi/issues/4788
+{
+# Fail if the package name was not passed, which is done when being invoked by dpkg
+if [ -z "$DPKG_MAINTSCRIPT_PACKAGE" ]
+then
+        echo 'DPKG_MAINTSCRIPT_PACKAGE was not set, this script must be invoked by dpkg.'
+        exit 1
+fi
+# Loop through files in /boot, shipped by the package, and remove them, if existing
+for file in $(dpkg -L "$DPKG_MAINTSCRIPT_PACKAGE" | grep '^/boot/')
+do
+        [ ! -f "$file" ] || rm "$file"
+done
+}
+_EOF_
+fi
+
 exit 0
 }