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I have a 12.04 beta 2 Wubi installed. I want to change it to a 64 bit wubi when I upgrade to the final 12.04 version.

  1. Would I need to uninstall the old Wubi and then reinstall a complete new one?
  2. When I download the wubi, it does not say if it's 32 or 64 bit. So how do I upgrade/reinstall to wubi 64 bit?

My system is Intel® Core™ i5 CPU M 540 @ 2.53GHz × 4. It has 4 GB of RAM. So, I guess it's capable of running a 64-bit OS.

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See also: askubuntu.com/questions/5018/… –  Mechanical snail Sep 13 '12 at 4:46
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1 Answer

AFAIK you cannot change architecture 32 to 64 without a clean install. Upgrading 32 bit stable you just need to usual update. Nothing special is needed.

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Thanks! What about using a wubi for 64 bit? how do i do that? when i download the wubi installer it does not say whether its 32 or 64.. –  NewUbuntuUser Apr 27 '12 at 2:56
    
wubi should automatically detect your architecture and if you have a 64 bit processor, install 64 bit Ubuntu. Are you sure you are running a 32 bit version of Ubuntu ? Output of uname -rAlthough you will get various opinions, IMO if you have decided to stay with Ubuntu, why not do a standard installation ? IMO a standard install is easier to maintain ;) –  bodhi.zazen Apr 27 '12 at 3:06
    
@NewUbuntuUser is your windows 64bit? if so I think you dont need to care about wubi details. Just 64 bit ubuntu and install over wubi. You may need to change VT option enabled in the BIOS. I am not sure though –  kindahero Apr 27 '12 at 3:11
    
@bodhi.zazen Ya im sure its a 32 bit version uname -r gave this result 3.2.0-24-generic-pae , dunno what it actually means :) –  NewUbuntuUser Apr 27 '12 at 3:15
    
@kindahero the windows i am running is 32 bit,I tried running the wubi.exe from the downloaded 700mb iso file but it would not let me install wubi , i guess i would need to uninstall the previous version first. Well ill try after a couple of days , today the download speed is pathetic 20kbps Thanks! –  NewUbuntuUser Apr 27 '12 at 3:23
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