Linux installation (I) ISO Structure

 

Introduction:

How does one boot the Linux installation disc after it is inserted? What processes are involved in the process? How does the installation interface come out? How to modify it ?...

 

ISO structure:

The structure of the Fedora13 installation disc is as follows:

 

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Fedora13-DVD

| --. Discinfo

| -- EFI

| -- BOOT

| -- BOOT. conf

| -- BOOTIA32.conf

| -- Splash.xpm.gz

| '-- TRANS. TBL

| '-- TRANS. TBL

| -- GPL

| -- Images

| -- Efiboot. img

| -- Efidisk. img

| -- Install. img

| -- Pxeboot

| -- Initrd. img

| -- Initrd-PAE.img

| -- README

| -- TRANS. TBL

| -- Vmlinuz

| '-- Vmlinuz-PAE

| -- README

| '-- TRANS. TBL

| -- Isolinux

| -- Boot. cat

| -- Boot. msg

| -- Grub. conf

| -- Initrd. img

| -- Isolinux. bin

| -- Isolinux. cfg

| -- Memtest

| -- Splash.jpg

| -- TRANS. TBL

| -- Vesamenu. c32

| '-- Vmlinuz

| -- Media. repo

| -- Packages/*. rpm

| -- Repodata /*

| -- RPM-GPG-KEY-fedora *

| -- TRANS. TBL

'--. Treeinfo

 

Minimum installable structure:

The following figure shows the installable minimal installation disc structure obtained after repeated experiments. That is to say, other files are not necessary for general installation. Therefore, we will first analyze them from the most basic perspective.

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Mini-DVD/

| -- Images

| '-- Install. img

| -- Isolinux

| -- Initrd. img

| -- Isolinux. bin

| -- Isolinux. cfg

| -- Memtest

| -- Splash.jpg

| -- Vesamenu. c32

| '-- Vmlinuz

| -- Media. repo

| -- Packages /*

'-- Repodata /*

 

The experiment process is as follows (add files gradually until they can be installed properly ):

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Isolinux. bin: the grub interface is displayed and cannot be installed.

+ Isolinux. cfg: error "cocould not find kernel image: vesamenu. c32"

+ Vesamenu. c32: There is a CD boot interface but no background

+Splash.jpg: adds a background.

+ Memtest: "Memory test" option available

+ Vmlinuz: Install option error "Loading vmlinuz... cocould not find ramdisk image: initrd. img"

+ Initrd. img: character installation interface. An error is reported during installation. The installation image is missing.

+ Install. img: Graphical installation interface. If an error is reported during installation, you must activate the network connection.

+. Discinfo: an error is reported during installation. The repo cannot be found.

+ Packages & repodata: normal Installation

 

ISO production command:

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Sudo mkisofs-f-o tmp. iso-B isolinux/isolinux. bin-no-emul-boot-load-size 4-boot-info-table-R-J-allow-leading-dots-V "test"-T-l tmp/

 

 

Author ericzhong83