Problem with virtualbox

[Marco Tullio]

Hi,

First thank you for accepting me in the community virtualbox.
My question is about, i think with a bug! The problem is with my computer is Windows 7 Professionnel, system 64 bits,ok! But, when I create a virtual machine and type Microsoft Windows, the option 64 bits not exist, only 32 bits. for all and even Linux,Solaris, etc.

Obs: In my machine I use ubuntu 64 bits. So I can not use the virtual box because it does not work.
In use an existing virtual hard disk *the option( Ubuntu 64b).

You know what it could be?

Thanks a lot!

Marco Alves.

[Giles Coochey]

Post by Marco Tullio
Hi,
First thank you for accepting me in the community virtualbox.
My question is about, i think with a bug! The problem is with my
computer is Windows 7 Professionnel, system 64 bits,ok! But,when I
create a virtual machine and type Microsoft Windows, the option 64
bits not exist, only 32 bits. for all and even Linux,Solaris, etc.
Obs: In my machine I use ubuntu 64 bits. SoI can not use the virtual
box because it does not work.
/In/ /use an existing virtual hard disk *the option( Ubuntu 64b).
/You know what it could be?
Thanks a lot!
Marco Alves.

Hi Marco, check out Chapter 3 of the Manual:
https://www.virtualbox.org/manual/ch03.html

Specifically, section 3.1.2:


3.1.2. 64-bit guests

VirtualBox supports 64-bit guest operating systems, even on 32-bit host
operating systems,^[11
<https://www.virtualbox.org/manual/ch03.html#ftn.idp50374048>] provided
that the following conditions are met:

1.

You need a 64-bit processor with hardware virtualization support
(see Section 10.3, "Hardware vs. software virtualization"
<https://www.virtualbox.org/manual/ch10.html#hwvirt>).

2.

You must enable hardware virtualization for the particular VM for
which you want 64-bit support; software virtualization is not
supported for 64-bit VMs.

3.

If you want to use 64-bit guest support on a 32-bit host operating
system, you must also select a 64-bit operating system for the
particular VM. Since supporting 64 bits on 32-bit hosts incurs
additional overhead, VirtualBox only enables this support upon
explicit request.

On 64-bit hosts (which typically come with hardware virtualization
support), 64-bit guest operating systems are always supported
regardless of settings, so you can simply install a 64-bit operating
system in the guest.


Warning

On any host, you should enable the *I/O APIC* for virtual machines that
you intend to use in 64-bit mode. This is especially true for 64-bit
Windows VMs. See Section 3.3.2, ""Advanced" tab"
<https://www.virtualbox.org/manual/ch03.html#settings-general-advanced>.
In addition, for 64-bit Windows guests, you should make sure that the VM
uses the *Intel networking device*, since there is no 64-bit driver
support for the AMD PCNet card; see Section 6.1, "Virtual networking
hardware" <https://www.virtualbox.org/manual/ch06.html#nichardware>.

If you use the "Create VM" wizard of the VirtualBox graphical user
interface (see Section 1.7, "Creating your first virtual machine"
<https://www.virtualbox.org/manual/ch01.html#gui-createvm>), VirtualBox
will automatically use the correct settings for each selected 64-bit
operating system type.

Hope this helps.

Giles
--
Regards,

Giles Coochey, CCNP, CCNA, CCNAS
NetSecSpec Ltd
[phone]
[phone]
http://www.coochey.net
http://www.netsecspec.co.uk
giles-***@public.gmane.org