Modify & Rebuild an initrd Image

Let’s assume your image is located at  ./boot-contents/initrd.gz

# Get into an empty directory
mkdir initrd-files
cd initrd-files
# Unpack the image
zcat ../boot-contents/ | cpio -id

Now make whichever changes you need.

# Rebuild the image
find . | cpio --create --format='newc' | gzip  > ../boot-contents/initrd.gz


About andyortlieb

I've been a tinkerer and a lazy ideologist since I gained my first personal computer in 1989. I have an aversion to formal education and I prefer to learn things by experimentation. That is not a brag, it has not been a particularly helpful set of traits. My primary goals are to increase my safety, pleasure and usefulness as I work to build and modify technologies that will bring those same attributes to the masses irrespective of government. This is the documentation of my attempt at that journey.
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