2 files changed, 6 insertions, 3 deletions
diff --git a/.gitignore b/.gitignore
index 46a102d..3ea7963 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-*.cpio.gz
+*.cpio.xz
 buildos-buildid-*
 buildos-initrd-*
 buildos-image-*
diff --git a/bootstrap b/bootstrap
index 488a359..773b379 100755
--- a/bootstrap
+++ b/bootstrap
@@ -652,6 +652,9 @@ if [ "$stage" -le "5" ]; then
   # Quite a few files/directories are only accessible by root (e.g., /root) so
   # we run under sudo.
   #
+  # Note also that without --check=crc32 the kernel will not be able to
+  # decompress things.
+  #
   root_dirs="build dev etc mnt root usr var"
   root_links="bin sbin lib lib32 lib64"
 
@@ -660,7 +663,7 @@ if [ "$stage" -le "5" ]; then
   cd "$root"
   sudo find $root_dirs $root_links -print0 | \
     sudo cpio --null -o -H newc | \
-    xz -9 > "$owd/buildos-rootfs.cpio.xz"
+    xz -9 --check=crc32 >"$owd/buildos-rootfs.cpio.xz"
   cd "$owd"
 
   subvol_snapshot -r "$root" "$root-5"
@@ -691,7 +694,7 @@ if [ "$stage" -le "6" ]; then
 
   cd "$root"
   sudo cpio -o -H newc <<EOF | \
-    xz -9 > "$owd/buildos-init.cpio.xz"
+    xz -9 --check=crc32 >"$owd/buildos-init.cpio.xz"
 usr/lib/os-release
 init
 usr/sbin/buildos