I still fail to see why this is a bug in wubi or ntfs-3g. The way I see it is 
that Windows8 chooses to hibernate by default on shutdown (unless fast-start is 
disabled), without the knowledge of the user. The fact that the user is unaware 
of it, doesn't change the fact that it's hibernated. So it's correct for 
ntfs-3g to refuse to mount it.
Also, the fact that Microsoft consider "Restart" a true restart and "Shut down" 
a hidden, system hibernation is not intuitive or logical (to me).

The problem with Wubi and hybrid sleep, is in my mind a windows 8 bug.
Since in this case, it's Shutdown (not restart) that cleans up the mess
left behind by the hybrid sleep. Now suddenly Restart is the inferior
option that leaves a quasi-hibernated state.

Why would it be up to ntfs-3g to try to interpret this mess and what
should it do with a system-hibernated state versus a user-hibernated
state?

For Wubi, it's probably easy enough to check and switch off 'hybrid
sleep' to get around the issue, but I think it's unlikely that Microsoft
intended this and maybe they'll fix it.

References:
1. this shows that Windows 8 shut down is intentionally hibernating 
http://blogs.msdn.com/b/b8/archive/2011/09/08/delivering-fast-boot-times-in-windows-8.aspx
 
"Now here’s the key difference for Windows 8: as in Windows 7, we close the 
user sessions, but instead of closing the kernel session, we hibernate it. 
Compared to a full hibernate, which includes a lot of memory pages in use by 
apps, session 0 hibernation data is much smaller, which takes substantially 
less time to write to disk. If you’re not familiar with hibernation, we’re 
effectively saving the system state and memory contents to a file on disk 
(hiberfil.sys) and then reading that back in on resume and restoring contents 
back to memory. Using this technique with boot gives us a significant advantage 
for boot times, since reading the hiberfile in and reinitializing drivers is 
much faster on most systems (30-70% faster on most systems we’ve tested)."

2. That same link talks about "Restart" being the full reset (which is not the 
case after hybrid sleep):
" Also, choosing Restart from the UI will do a full shutdown, followed by a 
cold boot."

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https://bugs.launchpad.net/bugs/1043149

Title:
  [regression since 12.04] ntfs-3g refuses to mount Windows8 not using
  hibernation

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