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As I mentioned the Acer Aspire has an AMD X2 (64bit Athalon dual core) that certainly has the svm (AMD_V technology) flag on the chip, but it is not supported in the BIOS and VirtualBox will not let you install as 64-bit guest. The Intel VT flag is 'vmx'. AFAIK, all AMD 64-bit chips have the flag, not all Intel chips do. I do know that some Dell systems have the supporting chipsets, but you need to run a script to enable the virtualization. On 02/13/2010 03:04 PM, Edward Ned Harvey wrote: >> Most of the CPU chips out in the field today support hardware >> virtualization (some low-end Intel chips do not). But, many consumer >> laptops do not have the chipset or BIOS support. Without the BIOS >> support there is no way to enable the hardware virtualization >> acceleration. Certainly you can run VWWare, Virtualbox and QEMU withou= t >> vhardware support, but it poses some limitations. For instance in >> Virtualbox, you can't run 64-bit guests unless the hardware >> virtualization is enabled. >> I was just wondering what laptops might have support for >> virtualization. >> I know that the Toshiba Satellite and Acer Aspire do not have BIOS >> support (or the chipset) to support hardware virtualization. However, = I >> do know that some business laptops do have virtualization support. >> =20 > Just like long mode (aka LM, aka 64bit), the extra functionality for VM= or > LM inside the CPU costs extra to manufacture or purchase, so I'm going = to > make a disputable claim that laptop manufacturers won't put VM or LM en= abled > CPU's into their laptops, unless they're going to build the rest of the= > components in the laptop to support it too. > > There are lots of laptops and netbooks out there that do not have these= > options. > > I think if you don't have the VM option in BIOS, it's either enabled by= > default, or it's not in the CPU either. For example, I know my macbook= pro > supports vmx, and I don't think there's any way to disable it. > > You can prove me wrong if you wish. Look in BIOS and see that there is= no > VM enabling option ... Then boot from some linux system, and cat > /proc/cpuinfo. Look for the "AMD-v" or "vmx" flag. Optionally, you ca= n > also look for the "lm" flag. If you find it present in the CPU ... and= not > present in BIOS ... I contend that it's enabled and you can't disable i= t. > > That being said ... I know I use Dell Latitude, Dell Precision, Lenovo = T500, > and Apple Macbook Pro. These all support 64bit and virtualization. > > > =20 --=20 Jerry Feldman <gaf-mNDKBlG2WHs at public.gmane.org> Boston Linux and Unix PGP key id: 537C5846 PGP Key fingerprint: 3D1B 8377 A3C0 A5F2 ECBB CA3B 4607 4319 537C 5846