What command is used to create an ISO file for booting?

Creating an ISO file for booting typically involves preparing the necessary files and structure to allow a system to boot from the ISO. The command that is best suited for this purpose in the context of generating an initial RAM filesystem or ensuring that the system can boot with the appropriate modules and drivers is dracut.

Dracut is a tool designed to create an initramfs, which is an essential part of the boot process in Linux. It packages the kernel, necessary drivers, and other essential files needed for booting into a format able to be read by the kernel during the early stages of the boot process. While dracut itself does not create an ISO directly, it is a crucial part of preparing the bootable environment within that ISO.

The other options do not align with the task of creating an ISO file. For instance, mkinitrd also functions to create an initial RAM disk but might not have the versatility of dracut in terms of environments. grub2-install is used to install the GRUB boot loader to a device, and systemctl manages system services and states, which are unrelated to ISO file creation. Thus, dracut stands out as the most relevant choice in the context of preparing a system for booting from an