常见问题你会感觉
tftp timeout: 防火墙
time out script: 网关没有指定,在dhcpd.conf中
不能下载:vmlinuz和initrd程序和安装的系统版本不一致
内存必须>=2G
First, the basic outline
Fedora flow guide mounting disc
POST -> CD MBR -> MBR work -> kernel (initrd.img) -> Work anaconda
Second, the CD starts to understand key documents:
#mkdir /media/cdrom
#mount -r /dev/media /media/cdrom
A), the isolinux CAT / an isolinux.cfg follows (variant of the grub file, another bootloader)
b), the menu option information from the document isolinux.cfg, background loading vesamenu.c32 file and import splash.jpg
Three, CentOS installer boot process
3.1、MBR :
The first stage: boot.cat
/isolinux/boot.cat will not be used
512 bytes are used boot.cat
The second stage: isolinux.bin
Profile: isolinux.cfg
Each corresponding menu options:
-
-
- Load the kernel: / isolinux / vmlinuz
- Pass parameters to the kernel: append initrd = initrd.img ...
-
Loading initrd.img, the anaconda program running initrd.img
3.2, anaconda: Setup
tui: curses based text window
gui: the graphics window
Anaconda default program memory is greater than 512M GUI (curses text window), unless explicitly the initrd = the initrd.img the append text, less than 512M of curse window TUI.
The default start GUI Interface
If the display use the TUI interfaces:
Method a: pass "text" to the kernel parameter to:
Method two: boot: linux text
Method One: After selecting a menu option, press the Tab key and enter text in the back , that is at work in the text interface
Method Two:
This operation pressed the Esc key interface appears as shown: input isolinux.cfg rise associated command file laber call up the corresponding additional information and laber
3.3, the application of the working process anaconda
The first stage: the initial configuration before installing
The second stage: the installation phase
The third stage: the first start