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Old 09-20-2010, 11:10 AM
georgegeorge georgegeorge is offline
Join Date: Sep 2010
Posts: 3
What's wrong with my boot.plist?

CPU is i7 980X
Graphics card is nVidia Fermi

After I installed Snow Leopard 10.6.3, bootloader (PC EFI) keeps restarting my computer after I click the hard drive with the Apple icon where the OS is installed.

Could my 12 GB of RAM be the issue? I hear Snow Leopard will restart if there are more than 4 GB of RAM.

So I altered the file in Library\Preferences\SystemConfiguration with Notepad:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "">
<plist version="1.0">
<key>Kernel Flags</key>
<string>-v -f -x cpus=1 busratio=25 maxmem=4096</string>
<key>Graphics Mode</key>
<key>Boot Graphics</key>
<key>Quiet Boot</key>

Even though all the boot flags go through and screen resolution changes with "1280x1024x32", when I add maxmem=4096, the bootloader still shows "12279MB memory" on the upper left corner and computer restarts again. Why is the maxmem=4096 string not working? With Windows msconfig I am able to reduce the amount of RAM available to 4GB, so I know my RAM's not at fault.

boot.plist is the only file I modified. Are there any other files that need modifying to boot Snow Leopard? Perhaps mach_kernel or smbios.plist? I read something about a DSDT file but I don't understand what it is nor where to find it.
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Old 09-21-2010, 09:04 AM
Nameci's Avatar
Nameci Nameci is offline
Join Date: Jan 2010
Posts: 30
why not remove the other 6 gb and try if you will the same problem?

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Old 09-21-2010, 06:29 PM
Taisto's Avatar
Taisto Taisto is offline
Join Date: Jan 2008
Location: TriCity, Poland
Posts: 517
Try what Nameci suggested.

But on the other hand - were you able to boot this install earlier ? Cause to be honest i don't think this is a problem related to the memory. Does it reboot instantly after you hit enter ? With no info/text on the screen ?

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