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SubjectOfftopic? - I have a vmlinuz-3.2.0-rc7+ kernel file that will not load -- ("invalid magic number") with the latest Ubuntu grub2 (1.99-14ubuntu2)
From
Sorry to ask a potentially off-topic question, but I have received no
help from the GRUB2 mailing list.
The reply I got was:
     "Well apparently the number you gave it wasn't magic ;) just a
joke. I really don't have a good answer , I wish I did. Sorry , I just
needed to clown for a bit."
http://comments.gmane.org/gmane.comp.boot-loaders.grub.user/974

If noone has time to help, no problemo. I suppose that when Canonical
releases the final 12.04 that the problem will go away with a fresh
install.

I have a 3.2.0-6 kernel that Canonical built which successfully boots.
I have tried building a Linus GIT tree kernel using the .config that
Canonical used, but it still fails to boot.
My best guess is that perhaps there is either a problem with my Grub2
(1.99-14ubuntu2) installation, or that something is amiss with my
toolchain.

I am running a WUBI install (the root filesystem is located in a
loopback mounted file on my Windows 7 NTFS filesystem). The
distribution is Ubuntu 11.10 upgraded to 12.04 (Precise Pangolin).


fdisk:
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x8ea8e911

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
/dev/sda2 206848 976771071 488282112 7 HPFS/NTFS/exFAT

mount:
/dev/loop0 on / type ext3 (rw,commit=0,commit=0)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
/dev/sda2 on /host type fuseblk
(rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc
(rw,noexec,nosuid,nodev)
gvfs-fuse-daemon on /home/miles/.gvfs type fuse.gvfs-fuse-daemon
(rw,nosuid,nodev,user=miles)

/boot/grub/grub.cfg:

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi

function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}

function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then
save_env recordfail; fi; fi
}

function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}

insmod part_msdos
insmod ntfs
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set=root 9A200E69200E4CA7
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=1680x1050x32
load_video
insmod gfxterm
insmod part_msdos
insmod ntfs
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set=root 9A200E69200E4CA7
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
set locale_dir=($root)/boot/grub/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 44,0,30; then
clear
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/10_lupin ###
if [ ${recordfail} != 1 ]; then
if [ -e ${prefix}/gfxblacklist.txt ]; then
if hwmatch ${prefix}/gfxblacklist.txt 3; then
if [ ${match} = 0 ]; then
set linux_gfx_mode=keep
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=text
fi
else
set linux_gfx_mode=keep
fi
else
set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Ubuntu, with Linux 3.2.0-6-generic' --class ubuntu --class
gnu-linux --class gnu --class os {
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ntfs
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set=root 9A200E69200E4CA7
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /boot/vmlinuz-3.2.0-6-generic root=UUID=9A200E69200E4CA7
loop=/ubuntu/disks/root.disk ro quiet splash vt.handoff=7
initrd /boot/initrd.img-3.2.0-6-generic
}
submenu "Previous Linux versions" {
menuentry 'Ubuntu, with Linux 3.2.0-rc7+' --class ubuntu --class
gnu-linux --class gnu --class os {
set gfxpayload=$linux_gfx_mode
insmod part_msdos
insmod ntfs
set root='(hd0,msdos2)'
search --no-floppy --fs-uuid --set=root 9A200E69200E4CA7
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /boot/vmlinuz-3.2.0-rc7+ root=UUID=9A200E69200E4CA7
loop=/ubuntu/disks/root.disk ro quiet splash vt.handoff=7
initrd /boot/initrd.img-3.2.0-rc7+
}
### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###

Gnu C 4.6
Gnu make 3.81
binutils 2.22
util-linux 2.20.1
mount support
module-init-tools 3.16
e2fsprogs 1.42-WIP
pcmciautils 018
PPP 2.4.5
Linux C Library 2.13
Dynamic linker (ldd) 2.13
Procps 3.2.8
Net-tools 1.60
Kbd 1.15.2
Sh-utils 8.13
wireless-tools 30

Modules Loaded: parport_pc ppdev lp parport hid_logitech_dj joydev
bnep rfcomm bluetooth snd_hda_codec_hdmi snd_hda_codec_realtek
binfmt_misc usbhid hid uvcvideo videodev v4l2_compat_ioctl32
snd_usb_audio snd_usbmidi_lib snd_hda_intel snd_hda_codec snd_hwdep
snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer
snd_seq_device i915 drm_kms_helper drm i2c_algo_bit video mei psmouse
snd serio_raw soundcore snd_page_alloc shpchp e1000e

My system board is an INTEL DH67BL, BIOS
BLH6710H.86A.0110.2011.0415.1506 04/15/2011
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