How to make uInitrd

Hello Everyone.
I am using Beagleboard-xM revC.

I look at the archives below, I was able to compile the kernel.

And I have new questions.

How can I make uInitrd?
Alternatively, How can I make initrd.img original uInitrd.

Cross-compilation environment,Can I use mkinitrd ?

Thanks is advance.

The two easy ways, boot the beagle with your uImage, or fire up a qemu
machine with the same rootfs.

then run: "update-initramfs -c -k 2.6.xx-xx" to get the
initrd.img-2.6.xx-xx file, then run mkimage on the
initrd.img-2.6.xx-xx for use with u-boot..


Thank you for your guidance.
Sorry thanks very slow.

It took time, etc. I am looking to create the initrd file.

Again, as you say, update-It is the best way to use the initramfs.