diff --git a/board/aarch64/r2s/genimage.cfg b/board/aarch64/r2s/genimage.cfg
index 5c6820db..a7513740 100644
--- a/board/aarch64/r2s/genimage.cfg
+++ b/board/aarch64/r2s/genimage.cfg
@@ -45,12 +45,14 @@ image sdcard.img {
 	partition primary {
 		partition-type-uuid = 0FC63DAF-8483-4772-8E79-3D69D8477DE4
 		bootable = true
+		size = 200M
 		image = "rootfs.squashfs"
 	}
 
 	partition secondary {
 		partition-type-uuid = 0FC63DAF-8483-4772-8E79-3D69D8477DE4
 		bootable = true
+		size = 200M
 		image = "rootfs.squashfs"
 	}
 
diff --git a/board/riscv64/visionfive2/genimage.cfg b/board/riscv64/visionfive2/genimage.cfg
index f892dadb..0d48b36c 100644
--- a/board/riscv64/visionfive2/genimage.cfg
+++ b/board/riscv64/visionfive2/genimage.cfg
@@ -46,12 +46,14 @@ image sdcard.img {
 	partition primary {
 		partition-type-uuid = 0FC63DAF-8483-4772-8E79-3D69D8477DE4
 		bootable = true
+		size = 200M
 		image = "rootfs.squashfs"
 	}
 
 	partition secondary {
 		partition-type-uuid = 0FC63DAF-8483-4772-8E79-3D69D8477DE4
 		bootable = true
+		size = 200M
 		image = "rootfs.squashfs"
 	}