From 04378b78f40543e1a23b2226c9606ff24c69680e Mon Sep 17 00:00:00 2001
From: Andy Nguyen <theofficialflow1996@gmail.com>
Date: Sun, 24 May 2026 23:01:23 +0200
Subject: [PATCH] Make backup in zz-update-boot.

---
 distros/shared/zz-update-boot       | 6 ++++--
 distros/shared/zz-update-boot-multi | 7 +++++--
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/distros/shared/zz-update-boot b/distros/shared/zz-update-boot
index 4124fc7..8f4b224 100755
--- a/distros/shared/zz-update-boot
+++ b/distros/shared/zz-update-boot
@@ -5,6 +5,8 @@ set -e
 BOOT_PART="/boot/efi"
 KVER="$1"
 [ -z "$KVER" ] && KVER="$(ls -1t /lib/modules | head -1)"
-cp "/boot/vmlinuz-$KVER"        "$BOOT_PART/bzImage"
-cp "/boot/initrd.img-$KVER"     "$BOOT_PART/initrd.img"
+mv "$BOOT_PART/bzImage"     "$BOOT_PART/bzImage.old"
+mv "$BOOT_PART/initrd.img"  "$BOOT_PART/initrd.img.old"
+cp "/boot/vmlinuz-$KVER"    "$BOOT_PART/bzImage"
+cp "/boot/initrd.img-$KVER" "$BOOT_PART/initrd.img"
 echo ">> Kernel $KVER deployed to $BOOT_PART"
diff --git a/distros/shared/zz-update-boot-multi b/distros/shared/zz-update-boot-multi
index 560bba2..19a4753 100644
--- a/distros/shared/zz-update-boot-multi
+++ b/distros/shared/zz-update-boot-multi
@@ -9,11 +9,14 @@ KVER="$1"
 DISTRO="unknown"
 [ -f /etc/ps5-distro ] && DISTRO="$(cat /etc/ps5-distro)"
 
-cp "/boot/vmlinuz-$KVER"    "$BOOT_PART/bzImage"
-cp "/boot/initrd.img-$KVER" "$BOOT_PART/initrd-${DISTRO}.img"
+mv "$BOOT_PART/bzImage"              "$BOOT_PART/bzImage.old"
+mv "$BOOT_PART/initrd-${DISTRO}.img" "$BOOT_PART/initrd-${DISTRO}.img.old"
+cp "/boot/vmlinuz-$KVER"             "$BOOT_PART/bzImage"
+cp "/boot/initrd.img-$KVER"          "$BOOT_PART/initrd-${DISTRO}.img"
 
 # Ubuntu 26.04 is default boot — also update the generic initrd.img
 if [ "$DISTRO" = "ubuntu2604" ]; then
+    mv "$BOOT_PART/initrd.img"  "$BOOT_PART/initrd.img.old"
     cp "/boot/initrd.img-$KVER" "$BOOT_PART/initrd.img"
 fi