Booting directｌy opensuse iso file ｂｙ grub2 @ openSUSE Asia Summit2015

Booting directly openSUSE iso file by

grub2

openSUSE Asia Summit 20152015-09-05

Kentaro Hatori

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Self-Introduction

● Affiliation● Information-technology Promotion

Agency, Japan● Koedo Linux Users' Group (Koedo LUG)

which is one of local Linux community in Japan

● OpenStreetMap Foundation Japan● Open Knowledge Japan● Code for Japan

● Activity● Developing original LiveCD Linux but very

slowly and going away from the point

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Today's Topic is

Booting directly openSUSE iso file by grub2

Introduction of Koedo LUG

● Since August, 2002● Koedo is nicname of Kawagoe-city

and means Little Classic Tokyo● This community aims following-up

each members who are interested in Linux, ask about unknown term and contribute by joining events and seminars

● The rule of managing this community is every member thinks each other about shareing so long fun time through Linux

Where is Kawagoe-city?

Kawagoe Festival #1

Kawagoe Festival #2

Koedo LUG Activity

● Mailing List for information exchange about Linux & open source software

● Off party & study group each month● BBQ party on river beach each year● Publishing a original Linux technology

magazine “Linux User”● Comic Market summer & winter● Members：over 370（just registration

mailing list）● Active members：about 20

Software Freedom Day

2015-09-19 @Sios Technology inc.

BBQ (Beer) Party on Han-nou river beach

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Off Party & Study Group

● Very very variety theme from server to embedded including desktop

● Success story and failures● Failures are very important; these tell

bad know-how and how to asking and answering

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Failures

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I cannot success to boot directly openSUSE iso file by

grub2

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Today's Topic is

Booting directly openSUSE iso file by grub2

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Most strong point of Grub2

● Grub2 makes grub.conf automatically● Configure files are very complex...● A new function is booting directory a

Linux distro iso file without extracting

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Booting directly iso file

● You can have so many Linux distro iso files in one device which is CD/DVD or USB thumb drive and boot any iso file directly

● You can make original multi booting device

● But you must describe each distro booting process

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Example for Slax 32bit

menuentry 'Slax 7.0.8 32bit' {

insmod part_msdos

insmod ext2

set root='hd0,msdos1'

set isofile='/slax-7.0.8-i486.iso'

search --no-floppy --file --set=root $isofile

loopback loop ($root)$isofile

linux (loop)/slax/boot/vmlinuz from=$isofile slax.flags=perch,xmode nopersistent noeject noprompt noatime ro

initrd (loop)/slax/boot/initrfs.img

}

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Example for Porteus

menuentry 'Porteus-KDE v3.1' {

insmod part_msdos

insmod ext2


set isofile='/Porteus-v3.1-i486.iso'



linux (loop)/boot/syslinux/vmlinuz from=$isofile noswap kmap=jp nomagic

initrd (loop)/boot/syslinux/initrd.xz

}

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Example for Debian

menuentry 'Debian GNU/Linux 7.0.0' {

insmod part_msdos

insmod ext2


set isofile="/debian-live-7.0.0-i386-lxde-desktop.iso"



linux (loop)/live/vmlinuz boot=live iso-scan/filename=$isofile noprompt noeject quiet splash --

initrd (loop)/live/initrd.img

}

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Example for Ubuntu

menuentry "Ubuntu 14.04" {

insmod part_msdos

insmod ext2


set isofile="/ubuntu-14.04-desktop-i386.iso"


linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile noprompt noeject quiet splash --

initrd (loop)/casper/initrd.lz

}

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Example for Knoppix

menuentry "Knoppix 7.2" {

insmod part_msdos

insmod ext2


set isofile='/KNOPPIX_V7.2.0CD-2013-06-16-EN.iso'



linux (loop)/boot/isolinux/linux bootfrom=/dev/sdb1$isofile lang=us apm=power-off nomce

initrd (loop)/boot/isolinux/minirt.gz

}

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Example for Fedora

menuentry 'Fedora Live/Desktop 19' {

insmod part_msdos

insmod ext2


set isofile='/Fedora-Live-Desktop-x86_64-19-1.iso'

set rdfile='/isolinux/initrd0.img'


loopback loop $isofile

linux (loop)/isolinux/vmlinuz0 root=live:CDLABEL=Fedora-Live-Desktop-x86_64-19-1 $isofile rootfstype=auto ro rd.live.image quiet rhgb rd.luks=0 rd.md=0 rd.dm=0 iso-scan/filename=${isofile}

initrd (loop)$rdfile

}

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Example for CentOS

menuentry 'CentOS 6.5 i386 LiveCD' {

insmod part_msdos

insmod ext2


set isofile='/CentOS-6.5-i386-LiveCD.iso'

set rdfile='/isolinux/initrd0.img'



linux (loop)/isolinux/vmlinuz0 root=live:CDLABEL=CentOS-6.5-i386-LiveCD $isofile rootfstype=auto ro rd.live.image quiet rhgb rd.luks=0 rd.md=0 rd.dm=0 iso-scan/filename=${isofile}

initrd (loop)$rdfile

}

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Error of CentOS Booting

Kernel panic not syncing: Attempted to kill init!–

Pid: 1, comm: init Not tainted 2.6-32-431.e16.i686 #1

Call Trac:

[<c085cc75>]? Panic + 0x6e/0x122

[<c045fc71>]? do_exit + 0x741/0x750

[<c045fcbc>]? do_group_exit + 0x39/0xe0

[<c045fd31>]? sys_exit_group + 0x11/0x26

[<c04699bf>]? Sysenter_do_call + 0x12/0x28

ctrm_kms_helper: panic occurred, switching back to text console

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Example for TinyCore

menuentry 'CorePlus 6.3' {

insmod part_msdos

insmod ext2


set isofile="/CorePlus-current.iso"



linux (loop)/boot/vmlinuz iso=/mnt/sdb1$isofile cde quiet waitusb=5 tce=/mnt/cdrom/cde lang=ja_JP.UTF-8 kmap=qwerty/jp106

initrd (loop)/boot/core.gz

}

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Example for SystemRescue

menuentry 'System Rescue 4.5.1 ' {

insmod part_msdos

insmod ext2


set isofile="/systemrescuecd-x86-4.5.1.iso"


linux (loop)/isolinux/rescue32 setkmap=jp isoloop=$isofile dostartx

initrd (loop)/isolinux/initram.igz

}

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Example for Gparted

menuentry 'Gparted Live 0.21.0-1' {

insmod part_msdos

insmod ext2


set isofile="/gparted-live-0.21.0-1-i586.iso"



linux (loop)/live/vmlinuz boot=live config union=aufs noswap noprompt ip=frommedia toram=filesystem.squashfs findiso=$isofile


}

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Example for Clonezilla

menuentry "Clonezilla Live 2.3.2-22" {

insmod part_msdos

insmod ext2


set isofile="/clonezilla-live-2.3.2-22-i586.iso"


linux (loop)/live/vmlinuz boot=live live-config noswap nolocales edd=on nomodeset ocs_live_run=\"ocs-live-general\" ocs_live_extra_param=\"\" ocs_live_keymap=\"\" ocs_live_batch=\"no\" ocs_lang=\"\" ip=frommedia nosplash toram=filesystem.squashfs findiso=$isofile


}

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How to get the information about describing grub2

● Grub2/ISOBoot/Examples - Community Help Wiki

https://help.ubuntu.com/community/Grub2/ISOBoot/Examples

● Grub2/ISOBoot - Community Help Wiki

https://help.ubuntu.com/community/Grub2/ISOBoot

● Anyway mount and extract iso file and extract

● Making booting USB thumb drive from iso file by unetboot

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Mount and extract iso file

$ mkdir /mnt/loop

$ sudo mount -t iso9660,ro openSUSE-13.2-KDE-Live-i686.iso /mnt/loop

$ cat /mnt/loop/config.isoclient

IMAGE='loop;openSUSE-13.2-livecd-kde.i686;2.8.0'UNIONFS_CONFIG='/dev/ram1,loop,overlay'

$ cat /mnt/loop/liveboot

initrd-isoboot-suse-13.2.i686-2.1.2.gz

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Unetboot

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Example for openSUSE

menuentry 'openSUSE 13.2' {

insmod part_msdos

insmod ext2


set isofile='/openSUSE-13.2-KDE-Live-i686.iso'


linux (loop)/boot/i386/loader/linux ramdisk_size=512000 ramdisk_blocksize=4096 splash=silent quiet preloadlog=/dev/null showopts livecd_config=(loop)/config.isoclient

initrd (loop)/boot/i386/loader/initrd

}

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Error of openSUSEC Booting

error: no such partition.

error: disk 'loop' not found.

error: you need to load the kernel first.

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Example for openSUSE #2

menuentry 'openSUSE 13.2' {

insmod part_msdos

insmod ext2


set isofile='/openSUSE-13.2-KDE-Live-i686.iso'


linux (loop)/openSUSE-13.2-livecd-kde-read-only.i686-2.8.0 ramdisk_size=512000 ramdisk_blocksize=4096 splash=silent quiet preloadlog=/dev/null showopts livecd_config=(loop)/config.isoclient fromiso=$isofile

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Error of openSUSEC Booting

error: no such partition.

error: disk 'loop' not found.

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Anywaymost important thing is...

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Have a fun !!