cpio notes
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Create a cpio archive to create a Linux kernel inited
This shows how to create an initrd. Note that an initramfs is a root filesystem embedded into the Linux kernel. It is the successor of initrd.
Note that inited.cpio should be outside of the directory tree that is being archived. In this case I just assume it is in the directory above the inited.tree.
find initrd.tree | cpio -H newc -o > initrd.cpio # find initrd.tree | cpio --format=newc --create > initrd.cpio gzip initrd.cpio mv initrd.cpio.gz initrd
List the contents of initrd
gunzip --to-stdout /boot/initrd.img-2.6.31-22-server | cpio -t
Extract a Linux kernel
Note that newc format is probably not necessary for extraction.
gunzip --to-stdout /boot/initrd.img-2.6.31-22-server | cpio -i -d -H newc --no-absolute-filenames