Booting non-RedHat kernels

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Because RedHat uses udev and LVM, it is not enough to just slap in some other kernel into the /boot directory and go; one must perform some additional steps to get a bootable system. This includes building an initrd ramdisk image using the RedHat tools. The steps include:

  • Assuming you've got a kernel already located at /boot/vmlinuz-<version>, then
  • /sbin/new-kernel-pkg --package kernel --mkinitrd --depmod --install <version>
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