diff --git a/boot-script/Makefile b/boot-script/Makefile
index a95baee..b11347d 100644
--- a/boot-script/Makefile
+++ b/boot-script/Makefile
@@ -1,6 +1,7 @@
 # Recompile with:
 all:
 	mkimage -C none -A arm -T script -d simple.cmd simple.scr
+	mkimage -C none -A arm -T script -d simplesdcard.cmd simplesdcard.scr
 	mkimage -C none -A arm -T script -d debug.cmd  debug.scr
 
 	mkimage -C none -A arm -T script -d sid.cmd sid.scr
diff --git a/boot-script/debug.scr b/boot-script/debug.scr
index 9d0f758..daa4667 100644
Binary files a/boot-script/debug.scr and b/boot-script/debug.scr differ
diff --git a/boot-script/jcarr.scr b/boot-script/jcarr.scr
index c78d6bb..66589ae 100644
Binary files a/boot-script/jcarr.scr and b/boot-script/jcarr.scr differ
diff --git a/boot-script/sid.scr b/boot-script/sid.scr
index a5d704e..c8ce042 100644
Binary files a/boot-script/sid.scr and b/boot-script/sid.scr differ
diff --git a/boot-script/simple.scr b/boot-script/simple.scr
index 5437a0d..2a912fd 100644
Binary files a/boot-script/simple.scr and b/boot-script/simple.scr differ
diff --git a/boot-script/simplesdcard.cmd b/boot-script/simplesdcard.cmd
new file mode 100644
index 0000000..53ac844
--- /dev/null
+++ b/boot-script/simplesdcard.cmd
@@ -0,0 +1,29 @@
+# super simple pinebook script
+
+# Recompile with:
+# mkimage -C none -A arm -T script -d simple.cmd simple.scr
+
+# then, at the u-boot prompt run:
+# ext4load mmc 1:1 ${scriptaddr}  /root/pinebook/boot-script/simple.scr
+# source ${scriptaddr}
+
+### BOOT SCRIPT START ####
+### BOOT SCRIPT START ####
+### BOOT SCRIPT START ####
+
+ext4load mmc 1:1 ${ramdisk_addr_r} /boot/uInitrd-4.19.2-sunxi64
+ext4load mmc 1:1 ${kernel_addr_r}  /boot/vmlinuz-4.19.2-sunxi64
+ext4load mmc 1:1 ${fdt_addr_r}     /boot/dtb/allwinner/sun50i-a64-pinebook.dtb
+
+setenv bootargs 'root=/dev/mmcblk0p1 console=ttyS0,115200 console=tty1'
+
+booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r}
+
+### BOOT SCRIPT END. ####
+### BOOT SCRIPT END. ####
+### BOOT SCRIPT END. ####
+
+### Linux is now running. Nothing after this runs or 'exists' anymore.
+### Linux runs in the ARM architecture 'EL2' and 'EL1' level
+### ARM Power management is handled in the higher security level EL3
+### The only things left behind by u-boot are running in EL3
diff --git a/boot-script/simplesdcard.scr b/boot-script/simplesdcard.scr
new file mode 100644
index 0000000..fc2b174
Binary files /dev/null and b/boot-script/simplesdcard.scr differ