It's possible, but probably only as an experiment:

Note: This is a what-if answer and is not recommended, especially if you are using hibernate from Ubuntu!

• In theory, yes, Windows should be able to use your swap partition for its page (swap) file with some clever scripting on the Linux side.

  
  



• I'm not going to do a step-by-step because I haven't tried it and if you can't figure out how to implement this you shouldn't be trying it either :)

  
  
  
  

  1. Format the partition as NTFS from within Windows and set up Windows to use that drive exclusively for its swap file (nothing on C:)

     
     
  
  

  2. Have a startup/upstart script to format the partition as Linux swap on Ubuntu startup and enable swap (swapon).

     
     
  
  

  3. Have a shutdown script to swapoff and reformat the partition as ntfs.

     
     
  
  
  
  

Alternative (still not recommended) option:

You can create a swap file by following this guide on the NTFS partition, provided the NTFS partition is large enough for both swap files.

However this alternative is not recommended because:

• Swapping on an NTFS(3G) partition would be extremely CPU-heavy.


• And to make things worse, since the file can/will be fragmented, that would also cause a performance hit.