FC, On Friday 19 December 2008, fcassia wrote: > Very exciting release. It's good to see VBox growing by leaps and > bounds and challenging that other VMW#### thing.
Thanks. > "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, 64-bit guest support is always enabled, so you can > simply install a 64-bit operating system in the guest" > > What does "upon explicit request" mean?? Please note that you need AMD-V (or VT-x with Intel CPUs) in any case if you want to use 64-bit guests. It does not matter if your CPU is 32-bit or 64-bit. Sorry, I fear your CPU will not support 64-bit guests. > I loaded Vbox 2.1.0 under WinXP (32b) SP2. Created a new VM. Selected > "Windows" and "XP" as new OS. Tried to install XP64 (inside XP32) and > got the message from the install CD that "you need a 64-bit CPU to > install this...". > > Hence, what is this "explicit request" the manual talks about?. In any > case, that paragraphs needs some cleanup for clarity. If your CPU would support AMD-V there would be entries like Ubuntu (64-bit). Because your CPU does not support AMD-V, you will not see these entries. > PS: I'm running a single-core Athlon64 3400+ here, 64-bit,yes, but no AMD-V So no 64-bit support for guests, sorry. Kind regards, Frank -- Dr.-Ing. Frank Mehnert Sun Microsystems http://www.sun.com/
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