idigital Posted April 3, 2006 Share Posted April 3, 2006 I'm running a Pentium 3 (SSE2, no SSE3 support), and have OS X installed on the entire Primary IDE Slave device. While booting in single user mode, I see the error: AppleMTRRSupport: set WC memory type error 3 and then a couple of other problems followed by a kernel panic. It happens in both ACPI and X86PC modes. Searching the forums didn't really return much. Resolved: I set my graphics card (GeForce 4 MX400 4x AGP) interface type from USWC to UC in the BIOS. Link to comment https://www.insanelymac.com/forum/topic/13882-applemtrrsupport-set-wc-memory-type-error-3/ Share on other sites More sharing options...
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