From 6d8358b99589ec7f07d1c1316f5eb250726ba753 Mon Sep 17 00:00:00 2001
From: Jaron Kent-Dobias <jaron@kent-dobias.com>
Date: Sun, 26 Nov 2023 18:33:41 +0100
Subject: Added feature to back up old initramfs.

---
 prepare-lastboot | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/prepare-lastboot b/prepare-lastboot
index 4ba1042..f13afc2 100644
--- a/prepare-lastboot
+++ b/prepare-lastboot
@@ -30,6 +30,12 @@ if [ "$ROOT_FS" = "$BASE/$DEFAULT" ]; then
   # backup the current UKI
   echo "copying $UKI_NAME to $LASTBOOT-$DEFAULT.efi"
   cp "$EFI_DIR/EFI/Linux/$UKI_NAME" "$EFI_DIR/EFI/Linux/$LASTBOOT-$DEFAULT.efi"
+
+  echo "remove old initramfs images from /boot"
+  rm -f /boot/initramfs-*.img
+
+  echo "unpack current initramfs to /boot/initramfs-$(uname -r).img"
+  objcopy -O binary -j.initrd "$EFI_DIR/EFI/Linux/$LASTBOOT-$DEFAULT.efi" "/boot/initramfs-$(uname -r).img"
 else
   echo "not booted to $BASE/$DEFAULT, taking no action"
 fi
-- 
cgit v1.2.3-70-g09d2