Self-made Simple small Linux

Lab Environment:VMware Workstation Pro 14 (Trial version)

System Platform:

CentOS Release 6.9 (Final) kernel 2.6.32-696.el6.x86_64

Steps:

1. Partitioning and creating a file system

# FDISK/DEV/SDB

Divided into two necessary partitions

/DEV/SDB1 corresponding to/boot

/DEV/SDB2 corresponding Root/

2. Format File system

# MKFS.EXT4/DEV/SDB1

# MKFS.EXT4/DEV/SDB2

3. Mount/boot of the home-made Linux

# Mkdir/mnt/boot subdirectory must be boot

# Mount/dev/sdb1/mnt/boot

4. Installing Grub

#grub-install--root-directory=/mnt/dev/sdb

#hexdump-C-N 512/dev/sdb see that the SDB disk has been written to the MBR boot information

5. Copy the internal core and Initramfs files

#cp/boot/vmlinuz-2.6.32-696.el6.x86_64/mnt/boot/vmlinuz

#cp/boot/initramfs-2.6.32-696.el6.x86_64.img/mnt/boot/initramfs.img

6. Establish grub.conf

# cat >/mnt/boot/grub/grub.conf << EOF

Default=0

Timeout=30

Title Hunk_linux

Root (hd0,0)

Kernel/vmlinuz ro root=/dev/sda2 selinux=0 init=/bin/bash

Initrd/initramfs.img

Eof

Root=/dev/sda2 is considered to be attached to other machines later, SDA1 is/boot,sda2 Yes/

7. Creating a root system for a home-made Linux system

#mkdir/mnt/rootfs

#mount/dev/sdb2/mnt/rootfs/

#mkdir/mnt/rootfs/{etc,boot,dev,lib,lib64,home,var,usr,tmp,proc,sys,root,opt,mnt,srv,misc,net}

8. Copy the NIC driver to the root system of the home-made Linux system

#modinfo e1000

FileName:/lib/modules/2.6.32-696.el6.x86_64/kernel/drivers/net/e1000/e1000.ko

#cp/lib/modules/2.6.32-696.el6.x86_64/kernel/drivers/net/e1000/e1000.ko/mnt/rootfs/lib/

8. Run the script I wrote . (http://blog.51cto.com/191226139/2057595 found the 6th exercise) to run the program all at once

9. Copy the program file you just generated and the root system of LIB to the home-made Linux system

#cp-R/tmp/commands/*/mnt/rootfs/

10. You can switch to the target root for test commands

# Chroot/mnt/sysroot

11. Attach the disk to a newly created machine for testing

There's no problem with instructions.

After the network card is loaded with Insmod/lib/e1000.ko, the IP can be configured using Ifconfig.

At last:

Because of the use of/bin/bash instead of/sbin/init, the system is only used as a simple small system to deepen the understanding of the knowledge and to test whether the script written is working properly.

If you are interested, you can replace it with/sbin/init, just need to configure some configuration files.

Self-made Simple small Linux