Copied direct from http://whiteboard.ping.se/Android/Debian

diff --git a/debinit.sh b/debinit.sh
new file mode 100644 (file)
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--- /dev/null
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+#!/sbin/busybox sh
+
+# initramfs pre-boot init script
+
+# Mount the /proc and /sys filesystems
+/sbin/busybox mount -t proc none /proc
+/sbin/busybox mount -t sysfs none /sys
+/sbin/busybox mount -t tmpfs none /dev
+
+# Something (what?) needs a few cycles here
+/sbin/busybox sleep 1
+
+# Populate /dev
+/sbin/busybox mdev -s
+
+# Mount the root filesystem, second partition on micro SDcard
+/sbin/busybox mount -t ext4 -o noatime,nodiratime,errors=panic /dev/mmcblk1p2 /mnt/root
+
+# Clean up
+/sbin/busybox umount /proc
+/sbin/busybox umount /sys
+/sbin/busybox umount /dev
+
+# Transfer root to SDcard
+exec /sbin/busybox switch_root /mnt/root /etc/init