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Red Hat Enterprise Linux
10
Using image mode for RHEL to build, deploy, and manage operating systems
11.2. Adding or changing content in the bootc image initramfs

11.2. Adding or changing content in the bootc image initramfs

The rhel10/rhel-bootc image uses the dracut infrastructure to build an initial RAM disk (initrd) during the image build time. A default initrd is built and included in the /usr/lib/modules/<kernel_version>/initramfs.img location inside the container image.

You can use a drop-in configuration file to extend the dracut configuration, and place it in a file in the /usr/lib/dracut/dracut.conf.d/ directory. This re-creates `initrd with the modules you want to add.

Prerequisites

A booted system using bootc.

Procedure

Re-create the initrd as part of a container build:
```
FROM <baseimage>
COPY <custom_modules_list>.conf /usr/lib/dracut/dracut.conf.d
RUN set -x; kver=$(cd /usr/lib/modules && echo *); dracut -vf /usr/lib/modules/$kver/initramfs.img $kver
```
참고
By default the dracut command attempts to pull the running kernel version, which causes an error. Explicitly pass to dracut the kernel version of the target to avoid errors.

11.2. Adding or changing content in the bootc image initramfs

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