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Hey all, I have a Toshiba Satellite laptop that's running OpenSuSE 12.2 64 bit:
jobee@Suba:~> uname -a
Linux Suba.site 3.4.11-2.16-desktop #1 SMP PREEMPT Wed Sep 26 17:05:00 UTC 2012 (259fc87) x86_64 x86_64 x86_64 GNU/Linux
I downloaded VirtualBox AMD64 and installed it but no 64 bit options were available for VMs. I checked my BIOS and sure enough VT-x was turned off. I turned it back on and checked to see if my software could see the 64 bit hardware but no joy:
I've been trying to find out if I need to recompile my kernel (something I've never done; yet) now that VT-x has been turned on but I can't find any information on it. I tried to find some information on just recompiling my current kernel but everything I see is for installing a new kernel. So 1) do I need to recompile my existing kernel now that VT-x is on and 2) where are some instructions for doing so?
If you're asking for the steps, I pressed F2 on boot to get in to BIOS, under Virtualization I enabled VT-x and then exited BIOS and proceeded to boot my laptop.
There was no change in the operation of my laptop. At least nothing that I can see. In BIOS VT-x still shows as having been activated (I thought it might have turned off by itself). I've rebooted my laptop a couple of times and even power-cycled it but no joy.
Have you tried a 32bit os, just to make sure it's specific to 64 bit operating systems
I just did an install of XP 32 bit and it installed without any problems.
I am sorry to inform you that your BIOS played a dirty mindtrick on you leading you to believe VT-x can be enabled.
Your best bet would be running 32 bit virtual machines, or getting a new CPU/System to run virtual machines on (since i am no fan of using non Virtualization supported systems with Virtual machines)