I've reproduced by installing Windows Vista in Virtual Box and then running the Wubi installer and booting up ubuntu I also fall into busybox initramfs.
I then mounted an ext3 file system containing some tools and was able to strace the mount, see attached log. Not sure why the mount to fuseblk is returning -EBUSY as yet.
I've tested the same ntfs-3g binary against a linux-2.6.27-2 kernel and I can mount the same partition in a normal non-Wubi installation - so ntfs-3g and linux-2.6.27-2 are OK in the normal enviroment and not in the initramfs installer environment.
I've reproduced by installing Windows Vista in Virtual Box and then running the Wubi installer and booting up ubuntu I also fall into busybox initramfs.
I then mounted an ext3 file system containing some tools and was able to strace the mount, see attached log. Not sure why the mount to fuseblk is returning -EBUSY as yet.
I've tested the same ntfs-3g binary against a linux-2.6.27-2 kernel and I can mount the same partition in a normal non-Wubi installation - so ntfs-3g and linux-2.6.27-2 are OK in the normal enviroment and not in the initramfs installer environment.