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Linux uses Cpio to decompress initrd.img__linux

Source: Internet
Author: User
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The initrd.img in the 2.6 kernel is cpio compressed and is no longer a ext2 format used by the 2.4 kernel and cannot be mounted using the Mount-o loop. Need to decompress with gunzip and then use Cpio to unpack
Cp/boot/initrd-***.img initrd.img.gz
Gunzip initrd.img.gz
mkdir INITRD
MV Initrd.img INITRD
CD INITRD
Cpio-ivmd.. /initrd.new.img
Gzip.. /initrd.new.img
Then rename it to the/boot directory, restart can be observed after the modified effect. Unable to boot successfully after reboot. This is because the generated initrd.img is not correct. Resolved as follows:
Generate INITRD
Find. | Cpio-o-H NEWC | gzip >/mnt/sda1/boot/initrd.img-2.6.18-4-686
(Note:-H NEWC is required, otherwise the kernel will be considered ramdisk, not Initramfs)

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