guy keren wrote:

as well as sys admins/kernel developers - the initrd file on (some?) linux distributions is a gziped cpio file (at least on RHEL 5.X)

"Initrd" can come in one of two formats. These are either some (any) file system (you usually use some read only file system, most common of which is cramfs). If that is the case, the image is called "initrd", and is available since 2.4 kernels. The other option is to put the files inside a cpio archive. If that is the case, the image is called "initramfs", and is the new method (i.e. - 2.6).

Initramfs is the preferred method of creating initrd images, and so you can say that cpio is making a comeback... :-)

Shachar

--
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
http://www.lingnu.com

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