| | 44 | Starting with 10.6 Mac OS X is available in 64bit mode and with 10.7 most graphical application runs in 64bit mode. However, we have to distinct between the user and the kernel space. As !VirtualBox is using its own kernel extensions, it has to be build and run in a version which match the kernel variant. You can check the current kernel mode by executing `uname -m`. If this shows `i386` it runs in 32bit and if it shows `x86_64` it runs the 64bit kernel. For switching between these modes on boot see [https://support.apple.com/kb/ht3773 this kb article]. If the build system doesn't correct detect the right kernel mode, you can use `--target-arch=` to overwrite it. Please also note that !VirtualBox can execute 64bit guest operation systems, even when itself is 32bit. |
