Okay, so here's another round of issues.

1. I used the OSx86 Tools I installed with iPC to install EFI on my external drive which has OSX, but it wouldn't do it saying installation was not completed. I tried it a few times with the same result.

2. sudo nano /Library/Preferences/SystemConfiguration/com.apple.Boot.plist does not exist. Neither does the folder SystenConfiguration. And I couldn't find com.apple.Boot.plist in that folder or using finder.

If anyone knows what I can do to solve these issues, that'd be great. Thanks.

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Desktop:
AMD Athlon 64 3000+
MSI RS482M2 Motherboard
2GB DDR400 RAM
1x 80 GB IDE HDD
2x 120GB SATA HDDs
Creative Audigy Sound Card
GeForce 8500GT PCI-e Card

Laptop:
CPU
AMD Turion 64 X2 Mobile TL-50 (Socket S1 638), Codename: Taylor,
Cores: 2, Instructions: MMX, 3DNow, SSE, SSE2, SSE3, x86-64
Motherboard
Quanta 30B7
Chipset: Nvidia GeForce 6150
Southbridge: Nvidia nForce 410/430 MCP
Memory
4GB Dual Channel DDR2 RAM
Sound
Conexant HD Audio