Beaver_XT Posted December 10, 2009 Share Posted December 10, 2009 Well.... where to start now... Maybe I should explain my problem first. My laptop has problem with BIOS and some memory mapping (whatever it called). It gonna restart randomly whenever it detect and use more than 3GB of ram. I think this is why they preinstall 32bit Windows even though it has 4GB of ram. Yes, sure, I can pull out the other 2GB out but what's the point to buy a laptop with 4GB memory. Also I use OSX86 for photo and video editing so, more memory is more benefits to me. The question is... Is there anyway to address and force OSX86 to see and use only 3GB instead of 4GB that is in my laptop? OS X is Unix all right? So it should be someway to do it, but I don't know how to.... My laptop is Fujitsu-Siemens AMILO Pi3540-G01 install method - iAtkos 10.5.7 and use update from apple to 10.5.8 Kernal: voodoo9.7.0 BTW I've tried insert "mem=3072mb" in the boot flag but it doesn't seems to work. Thank you very much. Link to comment https://www.insanelymac.com/forum/topic/201743-can-i-make-os-x-see-and-use-only-3gb-instead-of-4-2x2gb/ Share on other sites More sharing options...
Lord_Jeremy Posted December 11, 2009 Share Posted December 11, 2009 Huh. You might be able to do it from the BIOS, but I don't know of any way to do it from the bootloader. An option probably exists, I just don't know of it. I'm really curious though, why do you want to limit the amount of RAM you're using? Link to comment https://www.insanelymac.com/forum/topic/201743-can-i-make-os-x-see-and-use-only-3gb-instead-of-4-2x2gb/#findComment-1356169 Share on other sites More sharing options...
Beaver_XT Posted December 11, 2009 Author Share Posted December 11, 2009 I got random restart if OS see more than 3GB RAM. That's why I want to limit it (without buying another 1GB) Link to comment https://www.insanelymac.com/forum/topic/201743-can-i-make-os-x-see-and-use-only-3gb-instead-of-4-2x2gb/#findComment-1356512 Share on other sites More sharing options...
Lord_Jeremy Posted December 12, 2009 Share Posted December 12, 2009 Really? That sounds like a bad RAM stick, I've never heard of OS X having problems with certain amounts of RAM. Link to comment https://www.insanelymac.com/forum/topic/201743-can-i-make-os-x-see-and-use-only-3gb-instead-of-4-2x2gb/#findComment-1357022 Share on other sites More sharing options...
Beaver_XT Posted December 13, 2009 Author Share Posted December 13, 2009 I have the same problem with every OS that use more than 3GB RAM. Ubuntu 64bit, All 64bit Windows. So, it's not OSX's fault. Just bad BIOS. And it seems like Fujitsu will never fix this problem. I've checked every ram stick, every device and everything works fine without a single error. That's why I need some command to lock the amount of memory I can use. Link to comment https://www.insanelymac.com/forum/topic/201743-can-i-make-os-x-see-and-use-only-3gb-instead-of-4-2x2gb/#findComment-1358153 Share on other sites More sharing options...
stooovie Posted December 13, 2009 Share Posted December 13, 2009 The boot flag is "maxmem=whatever", not "mem". And there definitely CAN be problems with certain amounts of memory. SATA controllers, for example, ten to crash with more than 2 GB memory, due to badly written 32bit memory space addressing. There are many threads here regarding this issue. Link to comment https://www.insanelymac.com/forum/topic/201743-can-i-make-os-x-see-and-use-only-3gb-instead-of-4-2x2gb/#findComment-1358544 Share on other sites More sharing options...
Lord_Jeremy Posted December 14, 2009 Share Posted December 14, 2009 Oh, forgive my ignorance. Guess I'll add that to my bank of knowledge. Link to comment https://www.insanelymac.com/forum/topic/201743-can-i-make-os-x-see-and-use-only-3gb-instead-of-4-2x2gb/#findComment-1358687 Share on other sites More sharing options...
Beaver_XT Posted December 16, 2009 Author Share Posted December 16, 2009 It's working! Thank you everyone. Oh, forgive my ignorance. Guess I'll add that to my bank of knowledge. Don't worry about it. It's really good when there's someone to talk to when you're in trouble. And I appreciate that very much. Link to comment https://www.insanelymac.com/forum/topic/201743-can-i-make-os-x-see-and-use-only-3gb-instead-of-4-2x2gb/#findComment-1361383 Share on other sites More sharing options...
Recommended Posts