unable to boot wubi after kernel update yesterday

[andyboy]

Hi ,
I have Windows 7 installed on a hard drive and am experimenting with Ubuntu using Wubi . I successfully updated to Ubuntu 10.4 last week and yesterday updated the kernel via the update manager . I am now unable to boot into Ubuntu but can into Windows . I can see the dual boot screen but after selecting the Ubuntu option it does not load and I seem to be in a loop as I soon return to the dual boot screen again .
Any help would be greatly appreciated as I would rather not have to uninstall and reinstall Ubuntu .
I am pasting the results of the boot info script below

\Boot Info Script 0.55 dated February 15th, 2010

============================= Boot Info Summary: ==============================

=> Windows is installed in the MBR of /dev/sda

sda1: __________________________________________________ _______________________

File system: vfat
Boot sector type: Dell Utility: Fat16
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs: /COMMAND.COM

sda2: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: No errors found in the Boot Parameter Block.
Operating System:
Boot files/dirs: /bootmgr /Boot/BCD /boot/grub/core.img

sda3: __________________________________________________ _______________________

File system: ntfs
Boot sector type: Windows Vista/7
Boot sector info: No errors found in the Boot Parameter Block.
Operating System: Windows 7
Boot files/dirs: /Windows/System32/winload.exe /wubildr.mbr
/ubuntu/winboot/wubildr.mbr /wubildr
/ubuntu/winboot/wubildr /ubuntu/disks/root.disk
/ubuntu/disks/swap.disk

sda3/Wubi: __________________________________________________ _______________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 10.04 LTS
Boot files/dirs: /boot/grub/grub.cfg /etc/fstab

=========================== Drive/Partition Info: =============================

Drive: sda ___________________ __________________________________________________ ___

Disk /dev/sda: 640.1 GB, 640135028736 bytes
255 heads, 63 sectors/track, 77825 cylinders, total 1250263728 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition Boot Start End Size Id System

/dev/sda1 63 160,649 160,587 de Dell Utility
/dev/sda2 * 161,792 22,571,007 22,409,216 7 HPFS/NTFS
/dev/sda3 22,571,008 1,250,258,943 1,227,687,936 7 HPFS/NTFS


blkid -c /dev/null: __________________________________________________ __________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/loop1 5e4cd665-4a8d-48a0-9b50-bbf5a752539f ext4
/dev/sda1 07D9-0B1B vfat DellUtility
/dev/sda2 D6A2AF6CA2AF5033 ntfs RECOVERY
/dev/sda3 62BEB1E2BEB1AF43 ntfs OS
/dev/sda: PTTYPE="dos"
error: /dev/sdb: No medium found
error: /dev/sdc: No medium found
error: /dev/sdd: No medium found
error: /dev/sde: No medium found

============================ "mount | grep ^/dev output: ===========================

Device Mount_Point Type Options

aufs / aufs (rw)
/dev/sr0 /cdrom iso9660 (ro,noatime)
/dev/loop0 /rofs squashfs (ro,noatime)


=================== sda2: Location of files loaded by Grub: ===================


??GB: boot/grub/core.img

======================== sda3/Wubi/boot/grub/grub.cfg: ========================

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
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 ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ntfs
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 62beb1e2beb1af43
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ntfs
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 62beb1e2beb1af43
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
set locale_dir=($root)/boot/grub/locale
set lang=en
insmod gettext
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
### 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 ###
menuentry "Ubuntu, Linux 2.6.32-22-generic" {
insmod ntfs
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 62beb1e2beb1af43
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /boot/vmlinuz-2.6.32-22-generic root=/dev/sda3 loop=/ubuntu/disks/root.disk ro quiet splash
initrd /boot/initrd.img-2.6.32-22-generic
}
menuentry "Ubuntu, Linux 2.6.32-22-generic (recovery mode)" {
insmod ntfs
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 62beb1e2beb1af43
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /boot/vmlinuz-2.6.32-22-generic root=/dev/sda3 loop=/ubuntu/disks/root.disk ro single
initrd /boot/initrd.img-2.6.32-22-generic
}
menuentry "Ubuntu, Linux 2.6.32-21-generic" {
insmod ntfs
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 62beb1e2beb1af43
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /boot/vmlinuz-2.6.32-21-generic root=/dev/sda3 loop=/ubuntu/disks/root.disk ro quiet splash
initrd /boot/initrd.img-2.6.32-21-generic
}
menuentry "Ubuntu, Linux 2.6.32-21-generic (recovery mode)" {
insmod ntfs
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 62beb1e2beb1af43
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /boot/vmlinuz-2.6.32-21-generic root=/dev/sda3 loop=/ubuntu/disks/root.disk ro single
initrd /boot/initrd.img-2.6.32-21-generic
}
menuentry "Ubuntu, Linux 2.6.31-21-generic" {
insmod ntfs
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 62beb1e2beb1af43
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /boot/vmlinuz-2.6.31-21-generic root=/dev/sda3 loop=/ubuntu/disks/root.disk ro quiet splash
initrd /boot/initrd.img-2.6.31-21-generic
}
menuentry "Ubuntu, Linux 2.6.31-21-generic (recovery mode)" {
insmod ntfs
set root='(hd0,3)'
search --no-floppy --fs-uuid --set 62beb1e2beb1af43
loopback loop0 /ubuntu/disks/root.disk
set root=(loop0)
linux /boot/vmlinuz-2.6.31-21-generic root=/dev/sda3 loop=/ubuntu/disks/root.disk ro single
initrd /boot/initrd.img-2.6.31-21-generic
}
### END /etc/grub.d/10_lupin ###

### BEGIN /etc/grub.d/20_memtest86+ ###
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
if [ ${timeout} != -1 ]; then
if keystatus; then
if keystatus --shift; then
set timeout=-1
else
set timeout=0
fi
else
if sleep --interruptible 3 ; then
set timeout=0
fi
fi
fi
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

============================= sda3/Wubi/etc/fstab: =============================

# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/host/ubuntu/disks/root.disk / ext4 loop,errors=remount-ro 0 1
/host/ubuntu/disks/swap.disk none swap loop,sw 0 0

================= sda3/Wubi: Location of files loaded by Grub: =================


3.2GB: boot/grub/grub.cfg
27.1GB: boot/initrd.img-2.6.31-21-generic
27.1GB: boot/initrd.img-2.6.32-21-generic
27.1GB: boot/initrd.img-2.6.32-22-generic
15.0GB: boot/vmlinuz-2.6.31-21-generic
24.6GB: boot/vmlinuz-2.6.32-21-generic
.7GB: boot/vmlinuz-2.6.32-22-generic
27.1GB: initrd.img
27.1GB: initrd.img.old
.7GB: vmlinuz
24.6GB: vmlinuz.old
=======Devices which don't seem to have a corresponding hard drive==============

sdb sdc sdd sde \\\\\\\\\\\

[bcbc]

I had the same problem on my 'wubi test' install after running updates (it was a fully working wubi 9.10 upgraded to 10.04). I tried to fix it... chrooted into it, tried to update again, dpkg --reconfigure etc. etc.

I ran out of ideas and in the end chucked it. Hopefully someone has some better ideas out there and can help you.

Just in case you don't fix it, if you do have any data you don't want to lose you can get at it as follows... boot a live CD and mount your hard drive. It will be under /media/<xxx> where <xxx> is your partition label or uuid. Then mount the wubi:

sudo mount -o loop /media/<xxx>/ubuntu/disks/root.disk /mnt

Then you can browse copy wubi files, e.g. your /home directory will be /mnt/home/yourusername

Copy them to a usb or to /media/<xxx>/yyy

[Scstrade123]

How to boot a window with Dos

[garvinrick4]

Why not use the previous kernel if that works for you and pass on the new kernel.
If I remember right using the escape key after hitting Ubuntu I think it gives you a few seconds and can be changed for more time. Anyway will give you other installed kernels to choose from.

[andyboy]

thanks very much bcbc and garvinrick4
i can't load a different kernel asit just loops round to the dual boot screen again so am trying to recover some files before wiping and reinstalling via wubi

rgds