You should only need to select the boot drive in the bios once. When you say it didn't come back on what error did you get?

Re the boot commands, Partition 1 on any GPT disk formatted by Disk Utility will be the 200Mb EFI partition so use disk0s2 instead. Also there's no need to type sleepkernel.

What's your chipset, have you installed the correct driver for your motherboard? Possible solutions for the waiting for root device can be found here.

With your usb issues i would try and toggle Legacy USB support in the bios. Otherwise try a different release, Leo4All and LawlessPPC are better tailored for AMD machines than Kalyway.

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 Mac OS X 10.6.4 Retail || Intel Core2 Duo E8200 2.66GHz || Gigabyte G31M-ES2L || GeForce 6600 GT 128MB || Realtek ALC883 Audio || Realtek RTL8169 LAN || Samsung SpinPoint F1 1TB HD || Sony Dual Layer IDE DVD RW DW-D22A || Apple Aluminium Keyboard || Mighty Mouse

 MacBook Pro || 2.4Ghz Core 2 Duo || 200Gb HD || 2Gb Ram || NVIDIA GeForce 8600M GT

 iPhone 4 || 16Gb