Boot Camp Posted April 15, 2008 Share Posted April 15, 2008 Is there a way to get it to use more? Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/ Share on other sites More sharing options...
prazvt Posted April 15, 2008 Share Posted April 15, 2008 Umm...it does support more than 3gb of RAM. So when you go to the "About this Mac", it doesn't say '4GB 667 MHZ RAM' ? Nevermind that the 667 is wrong...but if you have 4 1gb sticks, they should all show up. Do they show up in Windows (assuming it's x64 windows) or Ubuntu? Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-709052 Share on other sites More sharing options...
Boot Camp Posted April 15, 2008 Author Share Posted April 15, 2008 My "About this Mac" shows all 8 GB, but when I first boot my computer, before the white apple screen, the bootloader says 3 GB (actually 3199 MB). Does this have anything to do with how much RAM Leopard can use? Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-709076 Share on other sites More sharing options...
Mebster Posted April 15, 2008 Share Posted April 15, 2008 Totally off topic. From looking at your custom member title, I thought your name was better suited as Camp Boot Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-709091 Share on other sites More sharing options...
Boot Camp Posted April 15, 2008 Author Share Posted April 15, 2008 From looking at your custom member title, I thought your name was better suited as Camp Boot True, that would make more sense. Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-709098 Share on other sites More sharing options...
mikeyd Posted April 15, 2008 Share Posted April 15, 2008 Is your motherboard able to see/remap more than 4 gb ram? The OS can't use it if the MB can't. Mike Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-709143 Share on other sites More sharing options...
diggabyte Posted April 15, 2008 Share Posted April 15, 2008 This might be a result your BIOS settings, depending on your motherboard. I had the same problem with my Asus P5B Deluxe mobo. There is a BIOS setting for my P5B called 'Memory Mapping', which, when enabled, allows the system to recognize > 3GB of RAM without affecting performance. In my case, enabling this setting enabled 4GB of RAM to be detected by the BIOS and then be properly recognized by OS X after boot. I think many of the Asus P5 models have this feature. Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-710027 Share on other sites More sharing options...
Lakiopaalu Posted July 24, 2008 Share Posted July 24, 2008 I quess you are refering to this: SATA configuration seems also to have effect – if not as shown below, stability suffers when RAM usage goes over 3 GB Added two 2 GB sticks yesterday, and took my rig for a spin 8) Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-831401 Share on other sites More sharing options...
unclejezza Posted April 13, 2009 Share Posted April 13, 2009 I'm having problems with this issue also.... I have to disable memory remapping in the bios otherwise system crashes. I have 4gb installed but only 3gb is actively used by os x (and consequently my 64bit vista as well. like it says above 'if the mobo can't see it then neither can the os!). Any advice on correct mobo settings guys? I have a Asus P5K Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-1131727 Share on other sites More sharing options...
fbrozovic Posted April 14, 2009 Share Posted April 14, 2009 If you by "before the white apple screen" mean the Darwin bootloader, then it's normal that it can't display 8GB. It's a 32-bit loader and can only use 3GB of the RAM. Leopard, however, is 64-bit and can address the full 8GB. Nothing to worry about. --filip95 Link to comment https://www.insanelymac.com/forum/topic/99313-can-leopard-only-use-3-gb-of-ram/#findComment-1132268 Share on other sites More sharing options...
Recommended Posts