Comment 42 for bug 653134

@colin,

I've noticed cases where grub is being installed to windows partitions again. Not sure if related to the current wubi probs but thought I'd mention it. It's a little different than the old one that used to refer to partition #256. e.g. http://ubuntuforums.org/showthread.php?t=1603958

Extracts from bootinfoscript (fyi /dev/sda is a USB stick):
=> Grub 2 is installed in the MBR of /dev/sdb and looks on the same drive in
    partition #5 for /boot/grub.
...

sdb5: _________________________________________________________________________

    File system: ntfs
    Boot sector type: Grub 2
    Boot sector info: Grub 2 is installed in the boot sector of sdb5 and
                       looks at sector 296660197 of the same hard drive for
                       core.img, but core.img can not be found at this
                       location. According to the info in the boot sector,
                       sdb5 starts at sector 63.
    Operating System:
    Boot files/dirs: /ubuntu/winboot/wubildr.mbr /ubuntu/winboot/wubildr
                       /ubuntu/disks/root.disk /ubuntu/disks/swap.disk
                       /boot/grub/core.img

sdb5/Wubi: _________________________________________________________________________

    File system: ext4
    Boot sector type: Grub 2
    Boot sector info: Grub 2 is installed in the boot sector of sdb5/Wubi
                       and looks at sector 21424016 of the same hard drive
                       for core.img, but core.img can not be found at this
                       location.
    Operating System: Ubuntu 10.10
    Boot files/dirs: /boot/grub/grub.cfg /etc/fstab /boot/grub/core.img