Next, make the root file system image for the client. The full listing of the files is in Appendix A.
These files have been taken from a working system as a minimum configuration for having powerful shell (bash), client network utilities (dhcpcd and tftp), and copying and compressing utilities (dd, gzip). Administrative commands (mknod, mount, fdisk and insmod) are also present.
In the working directory create a file named initrd.lst and put these file names on it. To check the existence of these files in your system, run the following command:
# ls -d $(<initrd.lst) > /dev/null
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You should get an error output like this:
ls: /bin/clone: No such file or directory
ls: /bin/tftp: No such file or directory
ls: /lib/3c59x.o: No such file or directory
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The first error is a script to be created in the working directory. The second error is the program tftp found in the directory /usr/bin instead of /bin. The third is the network interface card module (probably not yours) found in the directory /lib/modules/$(uname -r)/kernel/drivers/net.
These three files will be discussed in upcoming sections separately soon. If there are other missing files, check for lack of installation or differences in version, distribution or hardware. Adjust the list to match your system.
