diff --git a/modules/disk/bios/postconfig b/modules/disk/bios/postconfig
index eaeefe8..6cca957 100644
--- a/modules/disk/bios/postconfig
+++ b/modules/disk/bios/postconfig
@@ -97,7 +97,7 @@ mkswap "/dev/mapper/voidvg.${diskid}-swap"
 mount "/dev/mapper/voidvg.${diskid}-root" "${dest}"
 btrfs subvol create "${dest}/void-rootfs"
 btrfs subvol create "${dest}/home"
-mkdir -p "${dest}/snapshot"
+mkdir -p "${dest}/snapshot" "${dest}/backup"
 
 umount "${dest}"
 mount "/dev/mapper/voidvg.${diskid}-root" "${dest}" -o subvol=void-rootfs