Goldfish64 Posted October 22, 2016 Share Posted October 22, 2016 I have a HP workstation xw6200 fitted with dual Intel Xeon "Nocona" processors. They are 64-bit and can run Snow Leopard and Lion in 64-bit kernel mode. However, due to the age and lack of SSSE3, I have to use legacy/AMD kernels. Now with Mountain Lion or anything newer, no kernel is able to successfully boot the machine, possibly due to the lack of LAHF/SAHF and/or other instructions. Nocona supports SSE2, SSE3 and NX just fine. Has there been any development of kernels that are capable of running such old hardware? The furthest I can possibly get is shortly after boot with a corecrypto invalid opcode panic using sinetek's 10.8.5 kernel. Other kernels simply hit an invalid opcode 9E (SAHF instruction) over and over. Link to comment Share on other sites More sharing options...
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