vbetts Posted June 23, 2009 Share Posted June 23, 2009 Been wondering something. There's support for 64-bit under intel cpus like the pentium d series(Or any netburst with sse3 at that matter), but AMD has no support for 64-bit. Not atleast with my config and release it doesn't. Is there any way to get 64-bit support under an amd machine and leopard? Specs and release and kernel are in my sig. Link to comment https://www.insanelymac.com/forum/topic/172054-64-bit-amd/ Share on other sites More sharing options...
Beerkex'd Posted June 23, 2009 Share Posted June 23, 2009 From the Voodoo Kernel .pdf manual: 64-bit support on AMD Due to an incompatibility with the SYSENTER instruction on AMD (vs. Intel), AMD users were unable to run Leopard in 64-bit mode. Using a combination of emulation and opcode-patching, the Voodoo kernel enables all capable processors to run in 64-bit mode. By default, AMD processors will run in 32-bit mode. To enable 64-bit mode on AMD, boot with boot flag –force64. Note that there are known incompatibilities with several kexts and applications. If you encounter problems in 64-bit mode, please switch to 32- bit mode. Link to comment https://www.insanelymac.com/forum/topic/172054-64-bit-amd/#findComment-1184398 Share on other sites More sharing options...
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