It was supposed to say Slist not Plist, that was a typo. I am getting the Slist error

So here is how things have gone so far, my first hackintosh iso I got was iDeneb, when I would try to boot it I would get the "waiting for root device" error. I read that if I get this error I should try with a usb DVD drive so I pulled out my external dvd drive and now I get the missing com.apple.boot.Slist error. Last night I got iATKOSv7and I am facing the same exact problems. My hardware is:
AMD Athlon 7750 Dual Core 2.7GHz
4.00 GB RAM
500GB/TB 7200RPM Serial ATA hard drive
NVIDIA GeForce 6150 SE Graphics
HP® Official Store — Buy an HP Pavilion Slimline s5120f Desktop PC (NP187AA#ABA) from HP
There is the exact pc, if you need any more info. Is there a fix for this. I have searched these forums but can't get a solution.

Well, I used the internal drive and used rd=disk0 now I just get to a screen that tells me to restart, any help?