Okay, so I tried for ages trying to fix my "waiting for root device" error while trying to install iPC. No success. After many frustrations, and a long wait to download Leo4All on a real slow connection, I am still stuck.

Luckily, there's no more waiting for root device error anymore. Still can't get to installer.
Boot up hangs at something like:

Cannot use ATS persistent store - switching to F0DB cache code
CODE_SIGNING: CS_INVALID_PAGE: p=119[somethinghere] something CS_VALID

In other, possibly unrelated news:

somthing discarbitration d[44]:
unable to mount /dev/disk0s1 0x00000047

which I think is the sole IDE hard drive I have hooked up to it.

I am booting the DVD from a SATA optical drive which I think is loaded as disk1s2.
I tried using -v -f flags (I get the root device error without -f).

Please help. I am starting to get real desperate here.

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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