codedancer Posted January 28, 2007 Share Posted January 28, 2007 I had been running 10.4.6 on my P4/NVidia and performed egWAN's update with the combo Intel patch to 10.4.8 using the Semthex kernal. I initially got a kernal panic after the Loginwindow.app started. I tried the various cache clearing and .restorevga fixes with no joy. I then tried the -legacy boot option and it booted fine. I have since added the Titan NVidia driver and get hardware installation and ran xbench with expected results. My question is what does the legacy option do and am I losing any functionality/performance with it? I have searched this forum and the Internet without finding a definitive explanation. If it is fine continuing to boot this way, is there a way to have the option defaulted so I don;t need to enter it each time? Finally, if there is a disadvantage, any ideas on what I should try to stop using it? Thanks. Link to comment https://www.insanelymac.com/forum/topic/40207-legacy-boot-option-explanation/ Share on other sites More sharing options...
zackint0sh Posted January 29, 2007 Share Posted January 29, 2007 older copies of semthex's kernel used "-legacy" to emulate sse3 support via sse2. the most current versions shouldn't need it Link to comment https://www.insanelymac.com/forum/topic/40207-legacy-boot-option-explanation/#findComment-287658 Share on other sites More sharing options...
codedancer Posted January 29, 2007 Author Share Posted January 29, 2007 older copies of semthex's kernel used "-legacy" to emulate sse3 support via sse2. the most current versions shouldn't need it Well, I downloaded the latest one (Build 8L2127) and still got the panic without the -legacy boot. My CPU says it has SSE3 support. Is there some way that I can see if my SSE3 support is emulated? Thanks. Link to comment https://www.insanelymac.com/forum/topic/40207-legacy-boot-option-explanation/#findComment-287851 Share on other sites More sharing options...
edmoncu Posted February 6, 2007 Share Posted February 6, 2007 i am encountering the same problem with my motherboard (kindly refer to sig). i am using the latest Jas 10.4.8 build. Link to comment https://www.insanelymac.com/forum/topic/40207-legacy-boot-option-explanation/#findComment-295219 Share on other sites More sharing options...
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