diff --git a/mkinitramfs b/mkinitramfs
index df1b940..e38aea9 100755
--- a/mkinitramfs
+++ b/mkinitramfs
@@ -284,7 +284,21 @@ __TMPCPIOGZ="$(mktemp "${TMPDIR:-/var/tmp}/mkinitramfs-OL_XXXXXX")" || exit 1
 __TMPMAINCPIO="$(mktemp "${TMPDIR:-/var/tmp}/mkinitramfs-MAIN_XXXXXX")" || exit 1
 __TMPEARLYCPIO="$(mktemp "${TMPDIR:-/var/tmp}/mkinitramfs-FW_XXXXXX")" || exit 1
 
-DPKG_ARCH=$(dpkg --print-architecture)
+DPKG_ARCH=$(get_dpkg_arch)
+
+get_dpkg_arch(){
+    case `uname -m` in
+        x86_64)
+          echo amd64
+          ;;
+        i686)
+          echo i386
+          ;;
+        aarch64)
+          echo arm64
+          ;;
+    esac
+}
 
 # Export environment for hook scripts.
 #
diff --git a/update-initramfs b/update-initramfs
index 746a6c1..0047670 100755
--- a/update-initramfs
+++ b/update-initramfs
@@ -167,7 +167,7 @@ run_bootloader()
 ro_boot_check()
 {
 	# check irrelevant inside of a chroot
-	if [ ! -r /proc/mounts ] || ischroot; then
+	if [ ! -r /proc/mounts ] || [ `stat -c %d:%i /proc/$$/root/` == `stat -c %d:%i /` ]; then
 		return 0
 	fi