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Linux notes 14 lesson Linux kernel parameter setting and kernel compilation installation

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1, Linux kernel parameter setting and INITRAMFS generation

2. Linux kernel compilation and installation


First, review the start-up process

post--boot order (BIOS)--bootloader (MBR)--kernel+ramdisk--root switchover (footfs)--/sbin/init (config file) Profile: Set default RunLevel--Develop system initialization scripts for system initialization--start service (/ETC/RC.D/RE#.D,/ETC/RC.D/INIT.D)--/etc/rc.d/ rc.local--set Ctrlaltdel key combination-start terminal (mingetty) and attach login program at terminal (login)--start X server if level is 5


RAMDisk CONTOS5:INITRD RAM Disk: Block device

Contos6:initfamfs FAM FS:


Configuration file:

C5:SYSV Init,/etc/inittab

C6:upstart,/etc/inittab+/etc/init/*.conf

C7:systemd,/usr/lin/sysemd

Linux notes 14 lesson Linux kernel parameter setting and kernel compilation installation

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