Bug 552064 – generate GRUB2 configuration with linuxmint.iso as rescue

• Product: [OLD] Docs on www.gentoo.org
• Status: RESOLVED WONTFIX

[Description tescas 2015-06-14 08:09:16 UTC]

# --- generate GRUB2 configuration with linuxmint.iso as rescue

# add this in the wiki :https://wiki.gentoo.org/wiki/Handbook:X86/Installation/Bootloader#Default:_Using_GRUB2
 


foo=/etc/grub.d/50_iso
[ -f $foo ] && mv $foo $foo.bak
cat << 00 > /etc/grub.d/50_iso
# -- LinuxMint #{{{
menuentry "/d8/iso/linuxmint-17.1-kde-32bit.iso" {
        # set isofile="/boot/iso/linuxmint-17.1-kde-32bit.iso
        set isofile="/iso/linuxmint-17.1-kde-32bit.iso"
        loopback loop (hd0,8)$isofile
        linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile locale=en_US.UTF-8
        initrd (loop)/casper/initrd.lz
}

 #}}}
# -- Gentoo #{{{
#0 menuentry "/d8/iso/gentoo" {
#0      set cmdline="dokeymap looptype=squashfs loop=/image.squashfs cdroot"
#0      loopback loop /stg3-amd64-<DATE>.iso
#0      linux  (loop)/isolinux/gentoo $cmdline root=/dev/ram0 init=/linuxrc initrd=gentoo.igz
#0      initrd (loop)/isolinux/gentoo.igz
menuentry "Gentoo" {
        set cmdline="dokeymap looptype=squashfs loop=/image.squashfs cdroot"
        set isofile="/iso/gentoo-x86-amd64-32ul-20140826.iso"
        loopback loop (hd0,8)$isofile
        linux  (loop)/isolinux/gentoo $cmdline root=/dev/ram0 init=/linuxrc initrd=gentoo.igz
        initrd (loop)/isolinux/gentoo.igz
 }
 #}}}

# --- <t:50_isofile:0> #}}}

00
chmod 755 $f00
cat $foo


   To generate the final GRUB2 configuration, run the  grub2-mkconfig   command:


    grub2-mkconfig -o /boot/grub/grub.cfg



Reproducible: Always

[Comment 1 tescas 2015-06-14 08:25:33 UTC]

# --- sorry some typos ... 


# --- generate GRUB2 configuration with linuxmint.iso as rescue   #{{{
foo=/etc/grub.d/50_iso
[ -f $foo ] && mv $foo $foo.bak
cat << 00 > /etc/grub.d/50_iso
#!/bin/sh
exec tail -n +3 $0

# -- LinuxMint #{{{
menuentry "/d8/iso/linuxmint-17.1-kde-32bit.iso" {
        # set isofile="/boot/iso/linuxmint-17.1-kde-32bit.iso"
        set isofile="/iso/linuxmint-17.1-kde-32bit.iso"
        loopback loop (hd0,8)$isofile
        linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile locale=en_US.UTF-8
        initrd (loop)/casper/initrd.lz
}

 #}}}
# -- Gentoo #{{{
#0 menuentry "/d8/iso/gentoo" {
#0      set cmdline="dokeymap looptype=squashfs loop=/image.squashfs cdroot"
#0      loopback loop /stg3-amd64-<DATE>.iso
#0      linux  (loop)/isolinux/gentoo $cmdline root=/dev/ram0 init=/linuxrc initrd=gentoo.igz
#0      initrd (loop)/isolinux/gentoo.igz
menuentry "Gentoo" {
        set cmdline="dokeymap looptype=squashfs loop=/image.squashfs cdroot"
        set isofile="/iso/gentoo-x86-amd64-32ul-20140826.iso"
        loopback loop (hd0,8)$isofile
        linux  (loop)/isolinux/gentoo $cmdline root=/dev/ram0 init=/linuxrc initrd=gentoo.igz
        initrd (loop)/isolinux/gentoo.igz
 }
 #}}}

00
chmod 755 $foo
cat $foo

 #}}}

[Comment 2 Alex Legler (RETIRED) 2015-06-14 09:00:20 UTC]

Your suggested changes are not applicable in the scope of the Handbook (where do the isos come from?). It also isn't needed for a standard system.

Users wanting to include this can find more information outside of the installation docs: https://wiki.gentoo.org/wiki/GRUB2/Chainloading