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Windows 7: Virtualbox not working with 64bit guest

25 May 2010   #11

Windows7 Ultimate 64bit

You're welcome...


My System SpecsSystem Spec
26 May 2010   #12

Windows 7

Quote   Quote: Originally Posted by Dinesh View Post
Quote   Quote: Originally Posted by zzz2496 View Post
Dinesh, does your processor have VT-x extension? If so, just tick the VT-x/AMD-V Virtualization Acceleration option in VirtualBox. FYI, you need to have VT-x/AMD-V to be able to virtualize 64bit guest OSes. I have OpenSUSE 11.2 64bit running as a guest right now, using VirtualBox 3.1.8 r61349.


Edit: I just read Intel's Doc about your T5500 here, it doesn't support VT-x, thus you won't be able to virtualize 64bit guest OS. You can virtualize 32bit guest OS though...
Now that explains the mystery. Thanks for the findings.
Hi, I'm a total novice to Ubuntu who is reading this thread because I was intrigued by a mention in PCWorld that one could run Portable Ubuntu Remix "as an app within Windows". Portable Ubuntu For Windows However it would not work for me stopping with a fatal error about cygwin. So I was searching this forum to look for answers and stumbled on this thread. Unlike the OP, what to do remains a mystery to me ..... I am running Windows 7 Home Premium 64 bit. I have 6 G of ram but my processor is a "Intel Core2 Duo P7450" which I believe does not have the built in virtualization capability and as noted my W7 is not Professional. a) Can I still run another OS in a virtual box (XP or Ubuntu)? b) How? c) In view of the problems discussed in this thread, will it be able to run Ubuntu 32? (Maybe the 32/64 conflict was my problem in running the portable Ubuntu as a Windows 7 app, even though I carefully followed the instructions in Would appreciate any help. Thanks.
My System SpecsSystem Spec
19 Feb 2013   #13

Windows 7 Ultimate x64, Windows 7 Home Premium 32bit, Linux, Solarius, DOS

Dinesh did you ever get this running? The fix is in the BIOS. I have older laptops and the setting was there for me. PM me if you need a hand still, yes a little late but hey, worth asking. I know many people are struggling.
My System SpecsSystem Spec

19 Feb 2013   #14

Windows® 8 Pro (64-bit)

To be honest,.I don't even remember.
My System SpecsSystem Spec

 Virtualbox not working with 64bit guest

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